| ID # | Model | Description | Sale |
| 27173 | A-PA1 Solid State Stereo Phono Pre-amp | Stereo Phono preamp | $ 24
Contact Us |
| 27016 | Accuphase C200 | Excellent preamp - one of the best ever made!!! All special design. Ground lifted all input. RF protected/shielded. Tape 1 to 2 copy. Tone controls are switched resistor/eq circuits. High variable frequency turnover. 3 auxiliary ins, tuner in, 2 phonos. Super quality phono pre's. With gain controls. Ultra quiet. Serviced, callibrated, cleaned and excellent condition. | SOLD
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Units
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| 17184 | ADA MB-1 | Midi tube bass preamp in box and packing.
Some people have ask about possibly adding a third tube to this design as a modification. I’m absolutely against this both technically and philosophically. It’s a ridiculous and useless modification, which in fact will cause the ADA not to run correctly, who ever is recommending this does not know design or electronics; period. The mods I do are for more modern and versatile “voicing” (nicer range of tonal quality programmed by the front panel) and lower noise floor. I like MB-1, but as a consumer you should also be aware that some DSP designs are actually very competitive. | SOLD
Similar
Units
Available |
| 46143 | ADA MB-1 | Bass preamp with tube gain and programmable EQ, chorus, compression, overdrive, contour, and tube harmonics. Incredible bass drive effects! 2.05 EPROM. Unit stores any preset, battery check OK, all switches and controls cleaned, excellent programs installed. Very good #8+ condition, no road use but has some obvious rack scratches. Superspec quiet machine. | $ 330
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| 46179 | ADA MB-1 | Bass preamp with tube gain and programmable EQ, chorus, compression, overdrive, contour, and tube harmonics. Incredible bass drive effects! 2.05 EPROM. Unit stores any preset, battery check OK, all switches and controls cleaned, excellent programs installed. Very good #8+ condition, no road use but minor scratches from rack on top, front, and rack ears. | $ 330
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| 44861 | ADA MB-1 Bass Preamp | Latest version, with MB-12.05 software. Stereo effects sends. Like new #9+ condition with no scratches whatsoever. Excellent performer; this is the more rugged version with chassis brace. | SOLD
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Units
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| 28423 | ADA MP-1 tube preamp | sn:810429 brand new in box with manual and warantee card. | SOLD
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| 17208 | ADA MP1 | Guitar Preamp, input replaced with rugged jack and level control, Unit is Rev 5 low noise modified tube/solid st. RFI modified ground mods tube front end modified to be truly warmer and thicker overdrive and solidstate circuits have been more evenly matched. Slightly worn cosmetics, input replaced with rugged jack and level control.
On my website is a clear explanation about ADA MP1 and mods. Without a doubt the 3 tube mod is a waste of time and money and actually will make the ADA MP1 run incorrectly. This unit operates on the principal that the FETs control the tube voltage and carefully inject distortions into the cathode of the tube and also, the programming on the front panel changes plate voltages to tubes! A remarkably clever design! Obviously, the people who offer this 3 tube mod and double transformer mod don't understand this circuit or its operations technology and they are misleading concerned players.
The modification that I do actually lessens the tube gain, lowers the noise floor, and adds equalization that is better for today's vintage sound. Players want more versatility in programming usual guitar overdrive effects. The original design is way too screechy metal in its overdriven character for too many programs. My alteration allows a wider range of programming to go from the metal to warm, driven to crank, to a bluesy overdrive whereby the overdrive and equalization controls are calibrated more in the middle range of its programming numbers; i.e. Number 5 on the overdrive is now a nicely driven sound rather than a badly overdriven sound but the ADA MP1 will be still be able to be heavily overdriven on an 8 or 9 setting. These modifications were acceptable to the ADA engineer at the time. In fact, he commented that the electro acoustic sound with my parts change was similar to his thinking too, in that it allows for more flexibility for front panel adjustment for even more guitar tube preamping effects.
I've done this mod for 25 years!! No complaints yet. Please call me directly for more info.
| $ 480
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| 27712 | ADA MP1 | later version MP1 guitar preamp, Used good condition, all functions OK except no midi | SOLD
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Units
Available |
| 42090 | ADA MP1 | Tube Guitar Preamp. Version 2.00. This unit is in brand new condition in box, with manual. Mods are available, call for details. | $ 480
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| 16051 | ADA MP1 Classic | Programmable guitar pre As new in box/packing/manual, unit barely used at all, excellent cosmetic and mechanical condition. | SOLD
Similar
Units
Available |
| 13669 | ADA MP1 Tube Preamp | Modified front end to have vintage fender style equilization (built into the tube stage). Also made quieter, nicer distortion/overdrive sounds. Rev 3 mod, excellent condition. | SOLD
Similar
Units
Available |
| 11062 | ADA MP1 Tube Preamp (Engineering Sample) | ADA MP1 Engingeering Sample, #8 Condition, Call for Details. | $ 520
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| 40272 | ADA MP1 Tube Preamp (Rev 6) | #8+ Condition, Excellent Audio, No rack Scratches, New Front Jack, Tube EQ Mod, Battery LED Mod, Battery Supply Mod, Audio Circuit Low Noise, 5534 op amp mod, upgrade k246 FET, super low noise mod. very rugged front panel jack, jack only works as guitar input, #8 condition, excellent audio, no rack scratches | $ 540
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| 40484 | ADA MP2 | Midi Tube guitar Preamp, update noise gate/effects loop, good cosmetic condition (minor chassis scratches on top), excellent mechanical, virtually no running time (#8 overall condition), Update - noise gate, later power supply version. Stereo effects, tremelo, chorus. XLR out. | SOLD
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Units
Available |
| 27515 | Adcom GFP-750 | Minimalist version, no tone controls - volume only, balance control, processor loop, stereo/reverse/mono control, cd balanced input + RCA, balanced main outs + 2 RCA, cleaned controls, excellent conditon - with remote | SOLD
Similar
Units
Available |
| 38146 | Adcom GFS6 | 6 channel speaker switches. Used, a few nicks and dents. All cleaned, boards resoldered where required. Speaker protector switch. Heavy duty speaker switches. | $ 70
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| 42302 | Adcom GTP-400 | FM/AM tuner, phono, CD, tape 1/2. Balance bass and treble controls. Unit has full service, including all cleaning and FM tuner alignment. Minor scratches on cover, some finger wear on controls, missing 1 memory button. #8 condition. | $ 200
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| 28215 | Adcom GTP-400 Tuner/Pre Amp | Black face unit slim line design. Excellent cosmetic condition. Cd,phono, tuner, tape 1, tape 2 functions. Balance, bass/treble control. 8 tuner presets. All analog knobs w/ digital display. completly cleaned and checked out all functions working. | SOLD
Similar
Units
Available |
| 41990 | Advent MPR-1 | Pre-amp with 2 1/4" inputs, 2 RCA outputs (male cable end, 10" long), 18 VDC RCA power cable, can use 2 stacked 9v batteries for PS. Includes 2 dynamic mics with long 25' cables, black, slick design. 1/4" splicing block installed on pre, can be removed upon request. Please inquire for more info. | $ 200
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| 46133 | Aphex 107 | Two channel thermionic mic preamp. New in box. | $ 220
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| 45886 | APT 202A | Moving coil preamp. 75ohm input impedance. Super low noise top board. Serviced and fully tested, with some capacitor updates. Excellent #9 condition. | $ 240
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| 42612 | APT Holman Moving Coil Preamp Board | 10 to 30 ohms. 10 ohm input impedence can be changed to any input impedence upon request. Please call for details. Unit tested good. | $ 120
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| 42646 | APT Holman Pre | Early SN, but complete audiophile update, with nice wood case. Phono 1, phono 2, tuner, aux 1 and aux 2 inputs. Bass, treble, balance, stereo controls. With in/out external processor loop. 2 separate tape send/receive in/outputs. Fully updated, serviced and cleaned. #8 condition, light wear around volume control (very light, all printing intact). Includes "dressy" hardware and custom wood case. Call for details. | SOLD
Similar
Units
Available |
| 27506 | APT Holman Stereo Preamp | Excellent Condition, 2 tape dubbing, High quality phono in, 2 aux in, 1 tuner, anti static mod, sub-sonic filter mod, level 3 cap upbgrade, NE5532 Headphone op-amp upgrade, clean and flush off flux from boards, 2x clean all controls and switches. | SOLD
Similar
Units
Available |
| 45882 | APT Moving Coil Preamp | #201/202. Moving coil preamp for Holman. Set for 100ohm input impedance, but can be changed per customer request. All caps updated, with noise check and EQ check. New old stock. | $ 240
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| 45884 | APT Moving Coil Preamp | #201/202. Moving coil preamp for Holman. Set for 100ohm input impedance, but can be changed per customer request. With low noise top board. New old stock. | $ 180
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| 44407 | APT Pre Preamp Board | 100ohm input. Excellent condition. | $ 120
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| 42427 | APT Preamp | full updates and mods, #9 condition with excellent face plate cosmetics. See the Services section of our site for detail on this great preamp and our updates and modifications. | SOLD
Similar
Units
Available |
| 38178 | APT Preamp | dent at bottom of front face plate, otherwise excellent condition. Full updates modification (power supply, relay, filter, headphone). Nice cleaned condition. | $ 400
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| 41820 | Apt Preamp | Inputs: Phono1, Phono2, Tuner, Aux1, Aux2, External Processor Loop, Bass and Treble rotary controls, Stereo Blend, Extensive Tonal Controls, Full Audiophile Update, #9.5 condition with minor paint chip on edge | $ 600
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| 43014 | APT Preamp | Not for sale, engineer sample unit. Has all updates. #6 condition. | NFS |
| 44071 | APT Preamp | With all updates. Phono headphone amp, power supply cap, all audio caps, phono level, mode stereo control mod. Excellent #9 condition. | $ 480
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| 45883 | APT preamp board | For 201/202. Set for 100ohm input impedance, but can be set up per customer request. All circuits tested OK. With low noise add on board, but no capacitor updates. Fully tested and working perfectly. | $ 140
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| 43343 | APT preamp face | Gray. #9 condition with some very minor edge nicks. | SOLD
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Units
Available |
| 43345 | APT Preamp Faceplate | Speckle instrument black. Like new, #9 condition. FACEPLATE ONLY. | $ 40
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| 45716 | APT preamp faceplate | Grey color with silver on edges. Good #7 condition with small dent on bottom and minor wear on edges. | $ 24
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| 26387 | ART DJ Pre | Outboard Phono preamp box, 1 time demo - perfect condition, has 12v AC adapter, ruggedized rca in/outs | SOLD
Similar
Units
Available |
| 38371 | ART DJ Pre II | Phono Preamp with 12v AC adapter, rca in/outs, with cartridge loading and low filter and gain control, NEW. | $ 50
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| 38372 | ART DJ Pre II | Phono Preamp with 12v AC adapter, rca in/outs, with cartridge loading and low filter and gain control, NEW. | $ 50
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| 39074 | ART DJ Pre II | Outboard Phono preamp box. | $ 60
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| 40010 | ART DJ Pre II | Phono Preamp with 12v AC adapter, rca in/outs, with cartridge loading and low filter and gain control, NEW. | $ 60
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| 34294 | ART DPS | Stereo tube preamp with adjustable tube voicing, 48v phantom, digital outs, Supermodified (PS, tube, shielding/ground, noise spec, RF noise) - call for details
HERE IS A LETTER TO ONE OF OUR CUSTOMERS CONCERNING DIGITAL CLOCK MOD "FADS" AND OUR ART DPS MOD:
Dear customer,
First of all, the clocks, stability of the clocks, or any clocks, are not the real problem in digital. I have personally never seen a problem with them, and most BSEE agree with me. Modifications to any DAC are suspicious. I am aware of this current modification “fad” but I don’t spin it. The people who claim such improvements are suspect. More problems exist concerning super sonic digital clock noise spray into the audio circuitry, and correct grounding issues, which tend to be the real culprit. In fact, this is why dither noise is added in the DAC circuits to linearize the converter so it will not see incoherent noise bursts on the digital ladder. (bit converter) Whether it is a $20 circuit or $2,000 circuit, better grounding and shielding of the DAC, clock, etc will usually solve the problem of super sonic noise ingress into the audio circuitry. This labor typically costs around $66. In the future, these supposed high cost, esoteric mods will prove to have minimal value. If you want more information, feel free to call and I will explain more about my ART modification. Also feel free to read my website, www.audioproz.com which will also explain about the ART mod and some important theory of audible effects of clever tube enhancement.
| $ 400
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| 33159 | ART Dual MP Model 254 | Two channel tube mic preamp - basic tube mic preamp, 48v phantom, in/out level led meter, 1 rackspace | $ 240
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| 39765 | Art MPA Gold | brand new in box mic pre. Rev. 3 modification. | $ 380
Contact Us |
| 39767 | Art MPA Gold | brand new in box mic pre. Rev. 3 modification. | V - contact us |
| 39527 | Art MPA gold "Solid Gold" | brand new in box mic pre. | SOLD
Similar
Units
Available |
| 39808 | ART MPA gold mic pre | sn# mo70104106 audio pro midified matched spec channels, match spec tubes, RFI ground mod, and transformer position mod front end noise mod, gain mod. | $ 380
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| 39805 | ART MPA gold mic pre | sn# mo70104106 audio pro midified matched spec channels, match spec tubes, RFI ground mod, and transformer position mod front end noise mod, gain mod. | $ 380
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| 39806 | ART MPA gold mic pre | sn# mo70104106 audio pro midified matched spec channels, match spec tubes, RFI ground mod, and transformer position mod front end noise mod, gain mod. | $ 380
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| 39807 | ART MPA gold mic pre | sn# mo70104106 audio pro midified matched spec channels, match spec tubes, RFI ground mod, and transformer position mod front end noise mod, gain mod. | $ 440
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| 45492 | ART Pro Channel | New stock, all functions tested, burn in, QC. Mic preamp, compressor, and equalizer. Two space mono processor. | SOLD
Similar
Units
Available |
| 45724 | ART Pro Channel | New and QC'ed. | $ 330
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| 45894 | ART Pro Channel | Six tube stages for great sound! New stock, QC'ed by AP. | $ 330
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| 45946 | ART Pro Channel | Six tube stages for great sound! New stock, QC'ed by AP. | $ 330
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| 46218 | Art Pro Channel | New stock, Super low noise, QC by AudioPro. Microphone preamp, compressor, and EQ. | $ 330
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| 41329 | ART Pro Channel (sn - 5071002482) | 1 Channel, Mic pre/comp/EQ, XLR i/o, 2 Space rack mount, SUPER SPEC MACHINE, Controls cleaned and serviced | SOLD
Similar
Units
Available |
| 34731 | ART Pro MPA (AP Super Modified) | Stereo Mic Tube Preamp, Super Fi modified for audiophile tube preamp -(higher gain/lower noise, tube, eq, pad, RF PS, mic front preamp mods). All in one Microphone preamp, Harmonic Enhancement controller, tube compressor design. The ART PRO MPA when fully modified is $990. It is truly still unique for some of the clever adjustment capabilities. The most obvious is the ability to adjust the level and phase of a very euphonic second harmonic distortion which is then gain rided. The preamp can sound thick, punchy, dense, edgy, silky, warm, strident, etc. It’s not just equalization… it is an alteration and enhancement of the original audio signal. ....read more about it here. | SOLD
Similar
Units
Available |
| 40839 | ART Pro MPA (Engineering Sample) | Stereo Mic Tube Preamp, Super Fi modified for audiophile tube preamp -(higher gain/lower noise, tube, eq, pad, RF PS, mic front preamp mods). All in one Microphone preamp, Harmonic Enhancement controller, tube compressor design. The ART PRO MPA when fully modified is $990. It is truly still unique for some of the clever adjustment capabilities. The most obvious is the ability to adjust the level and phase of a very euphonic second harmonic distortion which is then gain rided. The preamp can sound thick, punchy, dense, edgy, silky, warm, strident, etc. It’s not just equalization… it is an alteration and enhancement of the original audio signal....read more about it here. | Not For Sale |
| 31548 | ART Pro MPA (Engineering Unit) | Stereo Mic Tube Preamp, Meters Excellent level control, variable low frequency roll off, tube character is very subtle but audible **Super Modified - Engineering Unit** ask for details | Not For Sale |
| 34295 | ART Pro MPA (Modified) | Stereo Mic Tube Preamp, Super Fi modified for audiophile tube preamp -(higher gain/lower noise, tube, eq, pad, RF PS, mic front preamp mods). All in one Microphone preamp, Harmonic Enhancement controller, tube compressor design. The ART PRO MPA when fully modified is $990. It is truly still unique for some of the clever adjustment capabilities. The most obvious is the ability to adjust the level and phase of a very euphonic second harmonic distortion which is then gain rided. The preamp can sound thick, punchy, dense, edgy, silky, warm, strident, etc. It’s not just equalization… it is an alteration and enhancement of the original audio signal. ....read more about it here. | Not For Sale |
| 25649 | ART Pro MPA (Partially Modified) | Stereo Mic Tube Preamp, Line in +4dbm mod, Tube V+ mod, 48v mod, ground mods, mic front end mod, filter 1 pad mod, LF mod, Tube spec, meter EQ mod. | SOLD
Similar
Units
Available |
| 40856 | ART Pro VLA | (1 time demo version) 2 channel vactrol/tube level amp, dual mono "Gain Rider", level meters, downward gain reduction LEDs, nice switches and knobs, 2 rack space - Modification Available (contact us for details). | SOLD
Similar
Units
Available |
| 45936 | ART TPS | AP Modified Rev6 version, new stock. Mic preamp with advanced tube harmonic enhancement. Also to be used as line level processor for adding calibrated tube character. Extra control added for precise tube enhancement. | $ 380
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| 36418 | ART TPS II | New in box, Tube preamp system, 2 channel, XLR + 1/4" ins/outs, 48v phantom supply, 15 voicings, power supply mods, tube gain mod, RFI input mods, **Super Spec Unit** | $ 280
Contact Us |
| 43761 | ART TPS II | New, AP Modified to Rev 6. Modified level control for tube harmonic enhancement. Meter mod, compression mod, transformer shield, tube gain, noise floor mod. | SOLD
Similar
Units
Available |
| 39523 | ART TPS II | New in box, Tube preamp system, 2 channel, XLR + 1/4" ins/outs, 48v phantom supply, 15 voicings, power supply mods, tube gain mod, RFI input mods, Harmonic control. **Super Spec Unit** | $ 360
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| 928024 | ART TPS II | s070901830- new | $ 200
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| 41418 | ART TPS II | Tube mic preamp TPS II.
REV 6 Modified. Front panel control pot added for control of the Harmonic Distortion of the 12AX7 tube, Gain pad switch equalization improved for better low end response, power switch and transformer insulated from the audio with copper shielding, unbalanced inputs now accept +14 dbm. | $ 380
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| 41413 | ART TPS II | Tube mic preamp TPS II.
REV 6 Modified. Front panel control pot added for control of the Harmonic Distortion of the 12AX7 tube, Gain pad switch equalization improved for better low end response, power switch and transformer insulated from the audio with copper shielding, unbalanced inputs now accept +14 dbm. | $ 185
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| 41416 | ART TPS II Modified Rev 6 | New in box, modified tube harmonic enhancement, level match control, EQ mod, Metering Mod, Compress Mod, Transformer shield, Tube Gain mod
To learn more about the modifications on this unit, see the articles section of the website. | $ 380
Contact Us |
| 41417 | ART TPS II Modified Rev 6 | New in box, modified tube harmonic enhancement, level match control, EQ mod, Metering Mod, Compress Mod, Transformer shield, Tube Gain mod
To learn more about the modifications on this unit, see the articles section of the website. | SOLD
Similar
Units
Available |
| 41599 | ART Tube Fire | 8 channel tube microphone firewire preamp and interface, world clock in/thru, Fireiwre in/out, 8/8 Firewire interface (8 analog ins and outs), TRS 1/4" XLR combo input jacks, 1/4" TRS outputs, flexible monitoring, clip indicator for each channel, 48V of phantom power, up to 96K sampling rate | SOLD
Similar
Units
Available |
| 41411 | ART Tube Mic Pre | TPS II | SOLD
Similar
Units
Available |
| 46106 | ART Tube MP Project Series USB | Professional mic and instrument tube preamplifier with USB connectivity. New stock. | $ 110
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| 45487 | ART Tube Pac | New stock, all functions tested OK. | SOLD
Similar
Units
Available |
| 41325 | ART Tube Pac | XLR 1/4 in ins and out w/ phantom power - 1/2 rack/desktop design - bench tested | $ 130
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| 45488 | ART USB Phono Plus | New stock. | $ 88
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| 45489 | ART USB Phono Plus | New stock. | $ 88
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| 42625 | Audio Alchemy VAC-in-the-Box | Phono preamplifier, can handle +14 dbm output, audiophile FET input, OpAmp output, external power supply, #9 condition | $ 200
Contact Us |
| 41066 | Audio Source Pre One A | | $ 220
Contact Us |
| 41070 | Audio-Source Pre One A | Stereo Pre amp | SOLD
Similar
Units
Available |
| 32899 | Avalon VT-737SP | New, Single channel esoteric tube processor, compressor,mic preamp, semi-parametric EQ. | SOLD
Similar
Units
Available |
| 42119 | BBE 381 | 2 channels (clean and distorted), BBE Process control, unit is fully cleaned and serviced, #9 condition | $ 160
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| 45016 | Behringer Bass V-Amp | New stock. | $ 108
Contact Us |
| 39355 | Behringer MIC200 Tube Ultra Gain | Tube mic pre with 16 voicings. | $ 55
Contact Us |
| 39353 | Behringer MIC200 Tube Ultra Gain | Tube mic pre with 16 voicings. | SOLD
Similar
Units
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| 45018 | Behringer PP400 Phono Preamp | New stock. | SOLD
Similar
Units
Available |
| 34963 | Behringer Shark DSP110 | Digital 24-Bit Multifunction Signal Processor. Mic/Line preamp, Feedback destroyer, delay line for speaker time-alignment, compressor, 48 V phantom power, 24-bit A/D and D/A converters. Very compact (5 units mount in just over 1 rack space). Great "swiss army knife" live application tool. New unit, in box. | $ 90
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| 34960 | Behringer Shark DSP110 | Digital 24-Bit Multifunction Signal Processor. Mic/Line preamp, Feedback destroyer, delay line for speaker time-alignment, compressor, 48 V phantom power, 24-bit A/D and D/A converters. Very compact (5 units mount in just over 1 rack space). Great "Swiss army knife" live application tool. New unit, in box. | $ 90
Contact Us |
| 34961 | Behringer Shark DSP110 | Digital 24-Bit Multifunction Signal Processor. Mic/Line preamp, Feedback destroyer, delay line for speaker time-alignment, compressor, 48 V phantom power, 24-bit A/D and D/A converters. Very compact (5 units mount in just over 1 rack space). Great "Swiss army knife" live application tool. New unit, in box. | $ 90
Contact Us |
| 34959 | Behringer Shark DSP110 | Digital 24-Bit Multifunction Signal Processor. Mic/Line preamp, Feedback destroyer, delay line for speaker time-alignment, compressor, 48 V phantom power, 24-bit A/D and D/A converters. Very compact (5 units mount in just over 1 rack space). Great "swiss army knife" live application tool. New unit, in box. | SOLD
Similar
Units
Available |
| 34857 | Behringer Ultragain Pro MIC2200 | 2-Channel Tube Microphone Preamplifier/Line Driver/DI Box. "Soft Mute" 48v phantom, XLR & 1/4" ins/outs. Integrated parametric EQ. 12 segment LED meter. New in box. Great preamp at incredible price. | $ 98
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| 35965 | Behringer Ultragain Pro MIC2200 | 2-Channel Tube Microphone Preamplifier/Line Driver/DI Box. "Soft Mute" 48v phantom, XLR & 1/4" ins/outs. Integrated parametric EQ. 12 segment LED meter. New in box. Great preamp at incredible price. | $ 98
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| 37541 | Behringer Ultragain Pro-8 Digital ADA8000 | 8-Channel A/D & D/A Converter with 8 Mic Preamplifiers and ADAT Interface. 44.1 or 48 kHz with 24-bit resolution. Phantom power. Optical I/O. Single space rack mount. | $ 240
Contact Us |
| 22546 | Bellari 220 Dual Mic Pre | Dual Mic preamp - Full mods (RFI, Front End Pad, Impedance/Transformer-Higher output level/lower noise, PS, Hi Filter, High Freq slight harmonic distortion, plate saturation, chassis flownoise) - super quiet | $ 440
Contact Us |
| 30131 | Bellari MP110 | Single channel tube mic preamp, 1/2 rack space, XLR and 1/4" in/out | $ 184
Contact Us |
| 30179 | Bellari RP520 | Tube Mic Pre, Gold Face, VU meters | $ 430
Contact Us |
| 30195 | Bellari RP520 | Tube Mic Pre, Gold Face, VU meters | SOLD
Similar
Units
Available |
| 24764 | Carver 4000T | Mint brused gray silver, black controls, A-Z of controls, inputs, clenaed and serviced here, MINT | SOLD
Similar
Units
Available |
| 43227 | Carver CT17 Preamp | Carver tuner and preamp, with remote. Unit in excellent, #9 condition, professionally cleaned, calibrated, and resoldered for more rugged connections. Full functional quasi 4-channel. Can monitor and record simultaneously. Great for dubbing. 20 station presets. | $ 280
Contact Us |
| 26275 | Crown Straight Line 2 | Mint Condition, 1-rack space preamp, audiophile quality preamp with highest quality op amp, caps, connector controls, and circuit board. 2 aux ins, 2 tape inputs/dubbing, and processor loop, monitor switch L/R mono reverse switchable/defeat tone controls, Nice Style.
Although these Crowns are excellent preamps they’re not significantly different than an APT (which actually has a better phono pre) or an Adcom. Those two are both 2 rackspaces though.
| SOLD
Similar
Units
Available |
| 43401 | DBX 386 | Dual vacuum tube preamplifier. 2 channels, each with 1/4" and XLR ins/outs. Professionally cleaned and serviced. | $ 275
Contact Us |
| 43676 | DBX 386 | Dual vacuum tube preamplifier. 2 channels, each with 1/4" and XLR ins/outs. Professionally cleaned and serviced. Some minor scratches on top cover. | $ 275
Contact Us |
| 42402 | dbx Mini-Pre | Mint condition, single channel design with 12AX7 vacuum tube, -20db pad, phase switch, and 48v phantom supply. Peak and power LEDs. 60dB gain and -infinity to +10dB of output level. XLR microphone input, 1/4" TS line input, balanced 1/4" TRS and XLR outputs Table top design, very portable. | $ 80
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| 42401 | dbx Mini-Pre | Mint condition, single channel design with 12AX7 vacuum tube, -20db pad, phase switch, and 48v phantom supply. Peak and power LEDs. 60dB gain and -infinity to +10dB of output level. XLR microphone input, 1/4" TS line input, balanced 1/4" TRS and XLR outputs Table top design, very portable. | $ 70
Contact Us |
| 37671 | Demeter VTMP 2A | Tube Mic Preamp, modified gain and 2nd harmonic distortion in phase/out phase harmonic. | SOLD
Similar
Units
Available |
| 44032 | Demeter VTMP-2A | Tube mic preamp modified by AudioPro. Modified gain and second order harmonic distortion for in-phase/out-of-phase harmonic. All variable gain drive for mic preamp and variable tube harmonic enhancement. | $ 980
Contact Us |
| 42727 | Dynaco PAT - 4A | SN: 18123823. Stereo Pre-amp with "special", tape head, phono, tape, tuner, spare inputs. Volume, balance, stack stereo bass, stacked stereo treble, and selectable "HI Filter" (low pass filters at 15, 10, or 7k) all on nice metal style knobs. Front in/out 1/4" inputs, with tape monitor, loudness, "lo" filter, and stereo/mono A/B all on rocker style switches. Illuminated rocker power switch. Rear panel jacks a little crusty, normal for it's age. #9 condition, good unit! | $ 140
Contact Us |
| 27128 | Dynaco Pat 5 | Excellent Condition. 3 Tape ins, spare EPL external processor loop, 2 speaker switching capable. Many modifications and updates, most capacitors in audio circuits and upgrade some power supply capacitor clean all controls switch. | $ 280
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| 6637 | Fisher #50 C-4 | Tube mono, w/manual - 78 equalizer | SOLD
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Units
Available |
| 27660 | Fisher 50-PR | Phono preamplifier/equalizer, Mint Condition Cosmetically, Mono Vintage device in brown bakalite box with brass face plate, for 78 equalization, unit has powersupply upgrades, cleaned and serviced. | $ 265
Contact Us |
| 40829 | Furman MM-8A | Excellent quality low noise 4 mic pre mix to 2 channel (4x2 mixer). 48V ground lift, some minor updates. 5534 op amp design, 1 effects send. | SOLD
Similar
Units
Available |
| 43346 | Hafler Rack Face | Early version black face plate. With 10 square push buttons. Excellent #9 condition. | $ 30
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| 42182 | Kenwood K206 | video/audio in, phono, tuner, aux, 2 tape in/out, CD, fully serviced, ruggedized, and cleaned, this unit is the match to the KM106 | $ 220
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| 43844 | Luxman 5C50 | Super audiophile preamp! With aux/tuner/phone1/phone2 in, linear phase equalizer, two tape monitor dubbing. This is the better version with the later version open circuit design and hand built Luxman opamp. #8 condition with very minor dent in corner of face, some slight wear on top cover, and bottom edge plastic trim loose or cracked in spots but not obviously so. | SOLD
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| 24127 | Luxman 5C50 Pre-amp | Absolute top quality Class-A circuitry! Open discrete op-amp module upgrades. Low-use time, excellent condition. Part of matching 3-piece set. Also included are Luxman 5M521 Amplifier (see # 24128 in amplifiers), and Luxman 5T50 Tuner (see #24126 in receivers). We would like to keep this beautiful system together, so the PRICE IS FOR THE WHOLE SYSTEM not just the preamp.**SPECIAL WHOLE SYSTEM SALE** | SOLD
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| 24017 | Luxman C-12 | Slim line aluminum, Linear phase EQ! Very high-quality parts & controls, exc phono pre. (1 module pulled - - no phono!) | Contact Us |
| 20642 | Luxman C-12 | Slim line aluminum, super clean condition! Linear phase EQ! Very high-quality parts & controls, exc phono pre.
Be aware that this machine uses a special IC circuit which does go bad and there are no longer replacements available, unless robbed from another board. | SOLD
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| 45156 | Marantz AW115-1061-4 | Circuit board with switch. | $ 24
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| 26438 | Model PE2 Line Amp | Preamp, 600 ohm in, 8 ohm out, input/output volume control, small add on line box converter for installation/adapting audio signal - call for details | Contact Us |
| 43200 | NAD 1130 Stereo Preamplifier | Phono/Aux/CD/Tape1/Tape2/Tuner in. 2 outputs, 2 band bass/treble tone control. Capacitance load switch. Does moving cartridge or moving magnet. #8+ condition with some minor scratches on top cover. All controls and switches cleaned. Fully tested. No noise or modulation. | $ 135
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| 26539 | NAD Series 20 1020 | Stereo preamp, Good phono preamp, all controls and switches cleaned | SOLD
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| 44157 | Newmann PV76 | Up to 76dB gain in 6dB increments, selectable high pass filter at 40, 80 and 140Hz, XLR mic level inputs and XLR +4 dB outputs. | Contact Us |
| 42004 | Nikko Beta 30 | 2 channel pre-amp with tape, aux, tuner and phono inputs. With bass and treble tone controls. Modified/upgraded circuit for lower noise floor on headphone output, all controls cleaned 2x over, in #9 condition. | $ 160
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| 25159 | Nikko Beta 30 | Stereo preamp with box, packing, and manual, 1 1/4 rack space (non standard) power supply mods, 2 simultaneous ins/outs, sound proc loop, phono, tape monitor, bass treble | SOLD
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| 14480 | Nikko Beta 50 | Preamp - Stereo, modified (PS, headphone, regulator stage, tone control for better signal to noise), unit in excellent condition | SOLD
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| 17049 | Nikko Beta 50 II | Stereo Preamp, On front panel 2 input mixing/monitor, 3 external processor loops, resoldered, modified, cleaned, new power supply | SOLD
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| 44520 | Nikko Beta II | Slightly warm sounding, class A FET phono preamp. Very quiet with high quality controls. Professionally cleaned and serviced, with updated mylar capacitors in preamp section, better relay, and improved board soldering. Very good #9 condition with very minor stain on face and very minor nick on top of face. | $ 230
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| 43663 | Onkyo P304 | Record selector outs to two different taps! Super high quality phono preamp. Dat/Phono/CD/Line1/Line2/Tuner ins. Excellent #9 cosmetic and mechanic condition. All professionally cleaned and serviced, fully tested, and with some board resoldering. | $ 275
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| 17004 | Ortofon MCA76 | moving coil preamp | SOLD
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| 27851 | Parasound C/PT-1000R | Tuner Preamplifier, Very good tuner, Digital Display, Excellent condition, PS and ground mods to eliminate hum, modified headphone out to be super quiet | $ 280
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| 26874 | Phase Linear 2000 | Stereo Console, 3 AC outputs, 1 switched and 2 unswitched, Inputs - tape 1, tape 2, tuner, aux, and phono, Outputs - Main L,R and LR + RR, tape 2, tape 1, Seperate tone controls, Tone controls (Rotary) - Left treble and bass, Right treble and bass, balance, volume, ambience, and selector. Tone control (switches) stereo/mono, ambience, loudness, fully cleaned and refurbished, cosmetically good | SOLD
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| 22762 | Phase Linear 3500 | Preamp - 3 band sweepable parametric EQ, selectable EQ bandwidth, tone bypass, 2 tape monitors, 1 aux input. Low filter, mute and loudness switches, cleaned and calibrated, Modified - Call for details | SOLD
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| 43820 | Phase Linear 4000 | Stereo preamp with inputs for phono1, phono2, aux, tape1, tape2. Joystick balance control, left and right treble and tone controls, switches for tone turnover frequencies. All capacitors replaced and board connectors resoldered. Modified for better caps (75% changed out) | $ 440
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| 40931 | Presonus Blue Tube Mic Pre | 2 channel tube preamp. XLR, 1/4 inch in/out. New in Box. | $ 200
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| 40936 | Presonus Eureka Mic Pre/Compressor | 1 rack space mic pre/compressor/eq. New in Box. | SOLD
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| 45445 | Pyramid SEA-2500 x | Stereo preamp with Tuner, Aux, CD, Mic, and Phono inputs. Tape, mono, low filter, and muting buttons. Bass, mid, treble, and volume controls. Super tweek modification to EQ and find adjustment of balance. Professionally cleaned and serviced, all controls checked and OK. | $ 125
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| 45446 | Pyramid SEA-2500x | Tuner, Aux, CD, Phono, Mic inputs. Bass, Mid, and Treble EQ controls. Made minor modifications to make perfect level and EQ match between channels. New stock, QC'ed. | $ 125
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| 43344 | Rack face preamp | Anodized black, no handles. New stock. | $ 68
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| 928053 | Re: International Shipping | We ship internationally often and have yet to encounter a problem or complaint. We are very careful to test the equipment before it’s packed and then to double box the machine with added protection when needed for front panels, etc. We are not amateurs or an ebay store; we know these machines very well and know what it takes to get them to you safely. We use USPS priority internationally which seems to be the cheapest. If you prefer another carrier (you should know who delivers to your area reliably) please let us know. Also please be aware of any tariffs that you may be responsible for upon pick up on your end. International shipping may be expensive but we will make sure it is not a headache on top of the cost. | FYI |
| 27652 | Realistic 42-2930 | Phono Preamp - Solid State Stereo Pre-Amplifier, Small wall or cabinet mount box. Single Stere input/output device powered by AC line cord. | SOLD
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| 42483 | Realistic Stereo Pre-Amplifier 42-2101 | RCA out, mic 1/4" stereo inputs, phono RCA in. | SOLD
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| 18815 | Rolls MP13 Mini Mic Preamp | Mini Mic Preamp - Mic preamp with 30v phantom power | $ 90
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| 19512 | Rolls MP13 Mini Mic Preamp | Mini Mic Preamp - Mic preamp with 30v phantom power | $ 90
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| 19289 | Rolls PB24 | Mic Preamp mono, phantom 12/48v, super compact, can run on battery or with power supply | $ 78
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| 41699 | Rotel RTC-940 AX | Tons of control, 8+ FM digital memory. Aux, CD, Tape 1/2 inputs. No phono inputs. Slim-line, black color (Adcom look), with remote. Excellent, #9 condition with box. | $ 300
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| 41757 | Rotel RTC-940AX | SN: 504 15272. AM/FM stereo tuner, CD, tape 1/2, aux inputs, processor loop, includes all original box, packig, manual and factory cables. WITH REMOTE! Super quality machine, 4 stars. | SOLD
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| 42405 | SAE 2900 Audio Preamp | 2 stereo sweep parametric band control. 2 tape dubbing, 2 phono input, excellent phono pre IC updated with lower noise 4747 op-amp. Tuner in and aux in. SAE "level" control sliders, all correct original fader in excellent condition. Face plate has very minor scratch at rack holes. "Ruggedized" circuit board connectors and power supply. #8 condition. | $ 220
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| 18809 | SAE MK1B | Super-quality hand wired boards, low noise, hi-accuracy controls, 7 bnd EQ, 8 AC sockets, 3-space rack mt - speaker add on cable for interfacing amp | SOLD
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| 9224 | SAE P102 | Stereo preamp, programmable tone settings, 2 rack space, re-enforced all ground connections on RCA jacks and cleaned and serviced, excellent condition | SOLD
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| 26758 | SAE Stereo EQ MK1B | Super-quality hand wired boards, low noise, hi-accuracy controls, 7 bnd EQ, 8 AC sockets, 3-space rack mt, modified w/special tantalytic caps | SOLD
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| 21839 | Sansui RA-990 | Stereo Preamp, Stereo mic mixer adds reverb to mix, Stereo line ins, 2 tape in/out, Stereo out, 1/4" mic/guitar ins, each channel has level and pan controls, | $ 140
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| 43886 | Shure M64 | Shure M64 stereo preamp. 2 channels, RCA ins/outs, equalization switch for phono, flat, or tape. | $ 85
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| 24825 | Stanton 310 | Phono Stereo preamp, Filter in/out switch, R+L level and HF adj, 6-input loading switches, RCA L+R inputs | SOLD
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| 46055 | Stanton 310 | Phono Stereo preamp, with dip switches for cartridge impedance matching. Uses RCA in and professional screw terminals out. Unit can operate at AC 120 or 230 volt. Excellent #9 condition. | $ 88
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| 21849 | Sumo 0620 Stereo Pre-amp | Class A circuitry design pre-amp, very clean sounding unit, very good condition black one-sapce rack mount. | $ 300
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| 9763 | Sumo Athena Preamp | Total discreet class A circuits throughout, shielded transformer, high quality level control and switch $800 for complete Sumo System, Polaris amp, Athena Preamp, and Aurora Tuner | SOLD
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| 22246 | Tascam MX-80 Mic Mixer | 8 channel mic preamp, add on 48v power, extremely high gain low noise full bandwidth mic pre, 2 space rack unit, excellent conditon | $ 360
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| 24945 | Tascam MX-80 Mic Mixer | 8 channel mic preamp, add on 48v power, extremely high gain low noise full bandwidth mic pre, 2 space rack unit, excellent conditon. Rental Unit. | $ 360
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| 38159 | Technics SU-9070 Preamp | Stereo Preamp, complete, excellent mechanical and cosmetic condition. Ruggedized, updated, cleaned and calibrated. Nice Unit. | SOLD
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| 27655 | Technics SU-9200 | Stereo Preamp, Excellent condition, very good cosmetic, Stereo Control Center, Inputs-(Tuner, 2 aux, 2 phono, 2 tape monitor loops) gain control for phono 2 / 20db Mute Switch, phono impedance controls, Toned dereat, L/R bass and treble controls, bass and treble filters, stereo, reverse L+R, L, R, Mode switch, sounds like/design similar to MAC preamps (individual resistor/circuits for tone control) highest quality parts used. | SOLD
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| 42049 | Telefunken v72 | 12 pin (blade type) multi-pin connector, modular type design, locking latch on front panel, all metal chasis, untested but unit is totally intact and all internal cicuits look good | SOLD
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| 43093 | The Apt/Holman Preamp Owners Manual | Original Owners manual #8 condition, minor scratches on front cover. With Schematic included. | $ 10
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| 18023 | TL Audio Dual Pre | Dual Mic Preamp | SOLD
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| 41406 | Tube Mic Preamp TPS II - Rev 6 Modified | New in box, modified tube harmonic enhancement, level match control, EQ mod, Metering Mod, Compress Mod, Transformer shield, Tube Gain mod
To learn more about the modifications on this unit, see the articles section of the website. | SOLD
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| 43884 | Tube PAC | New stock! QC'ed by AudioPro | SOLD
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| 45343 | Tubessence Aphex 107 face plate | New old stock, never used. For two channel thermionic microphone preamplifier. White lettering with gray background and purple border. Perfect condition! | $ 18
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| 25276 | Yamaha C-60 | Modern, semi-audiophile unit, 4-bd eq, black modern unit, tuner, phono, aux, tape, phone jack, mute, eq bypas etc. | SOLD
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| 40468 | Yamaha PG1 | Unit in #9 excellent condition mechanically, #7 Fair Cosmetics (scratched on top and bottom panels but will look good in rack - faceplate is good, all lettering intact). Dual channel A/B guitar mono preamp with spring reverb. Foot controlable channel switching. QC'd, cleaned controls, switches, etc. | SOLD
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| 28139 | Yamaha PG1 | Unit in excellent condition. Dual channel A/B guitar mono preamp with spring reverb. Foot controlable channel switching. QC'd, cleaned controls, switches, etc. | $ 220
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Preamps