Pro version DH 220 amp with level controls. XLR inputs, ground lift. Later version amp with high quality parts. Quasi Class A design, Mosfet output transistor. Minor scuffs on edges, spray paint top black. Unit has seen low time in consumer studio. condition #8-
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Factory assembled and modified later version unit, with higher quality parts and high speed bypass caps. Features RCA L/R inputs and fused outputs. Fully serviced and calibrated, low use unit, with some minor scratches on top cover. Condition: 8-
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Quadraphonic amp, phenomenal condition
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3 space rack design with large VU meters (vinc unit) Awesome very well built high current 100 watt amp with meters and level controls, 2 speaker switches. *** Modified power supply, Improved upgrade audiophile grounding done***.
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Stereo power amp, 3-space w/VU meters. Awesome very well built high current 100 watt amp with meters and level controls, 2 speaker switches. *** Modified power supply, Improved upgrade audiophile grounding done***.
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High current control amplifier, 400 Watt, 60 Watt R.M.S. output, upgraded ground path for lower noise, replaced phono opamp with upgraded burrbrown (OPA #2604AP) for improved noise floor, REV3 # 10 NEW in box, with VU meters
High current control 200 Watt, audiophile mostly discreet circuit design, super low noise, high quality amp 115/230 volt operation, audiophile tone control operation, REV 3 MOD, with remote and instruction manual, #10 New unit
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Integrated Amp, 80-watt per channel, high-current design. Excellent hi-fi amp w/ remote. Mod RevII, Star ground mod - headphone, chassis and power supply, Upgrade audiophile phono pre. New Unit
Integrated amp. Audiophile grade design with remote for volume input switching. Superior all metal chassis quality controls. High current speaker relays. A.P. modified power supply, phono pre, and RFI modifications. sn 9400129 New condition, 1 time demo from display. With VU meters
Audiophile design, high current control amplifier. Upgraded low noise IC, AP Rev 3 mod. Blackface unit with 2 large V/U meters; 1/4" phone jack on face; bayonette speaker terminals. Inputs: Tape/Aux/Tuner/DVD/CD/Phono; Controls: Bass/Treble/Balance/Volume. Used but in like new, #9 condition, with original remote (#8+), box, and packaging. with VU meters,
Bass/keyboard amp, 1x12" speaker. Treble/hi-mid/low-mid/bass EQ. Contour switch, headphone jack, XLR direct out. Custom dampened chassis. Nice condition, very minor marks in a few spots, but nothing major, looks and sounds good. (If requested cab port can be dampened for an even tighter low end) #9 condition
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APT 1 Amplifier Upgrades and Repairs Technical Information: Read more about it here.
Bass Combo Amp. Passive/Active 1/4" inputs. Bass, Treble, Hi Mid, Low Mid controls (level). Cabinet has been dampened to improve Bass + smoothness of bass quality. Output: Master control + Boost, Limiter on/off, Horn on/off. Original woofer and Horn sweep tested, all OK. Aux in 1/8", Direct out XLR & headphone out 1/4". Nice sturdy but lightweight textured cabinet, with NEW G&K 200 watt, AMP MODULE INSTALLED #9 condition
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200 watt bass amp with power cable. 1/4" input with -10db button. Volume/ 3 voicing filters/ treble, hi-mid, lo-mid, bass tone/ boost level with footswitch jack/ master volume/ 2 1/4" speaker outs 4 ohm/ direct out/ send, return on back. AP mod improved filtering capacitors grounds. Black with grey control panel. Minor marks around edges, covers. Low use, fully serviced. Has AC cord. No rack ears (carry strap one side). 8+/10 condition.
Integrated amp. Unit is totally intact. One channel has shorted output transistor & bad emitter resistor (nothing burned or any obvious problem, probably an easy repair). Face plate and connector all in excellent condition. Unit could be easily converted to class A preamp transistor.
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Aluminum silver face, extremely excellent built, integrated amp, well done Fisher equilizer, blue backlight, Meter 80 watts per channel, 5 band equilizer, 2 independent speakers, high quality phone in, 2 tape dubbing monitoring tuner/phone aux in, 2 headphone. Very thoroughly serviced. condition #9
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2 channel solid state amp. Channel 1 controls: Volume/Mid/Treble/Bass/Reverb; Channel 2 controls: Gain/Limiter/Presence/Volume. Features Chorus effect with rate and depth controls, and Mono/Stereo effects loops. Has original 2x10 drivers.
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4 channel PA amp. 1/4" and XLR inputs, no phantom power, spring reverb, max 80W. Discrete amp circuit, very serviceable. 9/10 condition. Ruggedized board soldering and cleaned.
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Need your guitar or bass amp tuned up? We are now doing repairs, upgrades, and modifications to all types of guitar amps. Orange, Mesa Boogie, Fender, Marshall, Hughes and Kettner, Peavey, Ampeg, Gibson, Silvertone, etc. Read more about it here
With nice condition cage. It is a functional machine with very low use. Cheaper but good, functioning tubes for outputs (Sylvania EL34) with one spare high quality AR4 rectifier (new). *Rough cosmetic condition. Rusty chassis and transformer. Unit needs a serious clean up of cosmetics. Stereo switch removed. Tube sockets good & tight. Both channels work. Full power check ok, operates well. Requires final bias set up, maybe some resolder work. SOLD AS IS. #7- condition.
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30watt per channel tube amp with recent set of EL34tubes and 7199 predrive tube. Unit has many updates done to improve reliability and fidelity. Shop engineering unit used to demonstrate updates of tubes. Good #7 cosmetic condition with obvious rust spots on chassis.
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Dual mono design. 150watt/channel, 250watt peak power. 2 speaker switch. High quality relay. Excellent #9 condition, very low use. Professionally cleaned and serviced with some board resoldering.
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gain, low mid, high mid, bass, treble, 1 × 8" Dean Markley vintage rock design speaker, cute little practice amp, good condition, few very minor marks, headphone jack currently does not null out speaker (would require rewiring), great student/practice model!, #8 condition
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Split spectrum amplifier. Very high quality design. Balance, level controls. Meter low pass. Subsonic filter. 4ohm/8ohm speaker selector. Built in speaker crossover and electronic crossover. Actually mono subwoofer, but for 2 speakers. Low use time. Condition: #9
45 watts RMS @ 8ohm, 70 watts RMS @ 4ohm. Built in crossover, live level and speaker level inputs, pass-thru speaker in/out, auto on/off switch. For speaker building. NEW STOCK with original box and packing.
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2-input 60 Watts per channel. A and B Speaker Selector, Auto sense of amp signal to turn on and off. Front panel volume and balance control (Easily up-gradable and comprehensive design.) #10 condition, new in box.
Audiophile grade 150 watt power amplifier that delivers 75 watts per channel. Very compact, discreet design. (This unit has been modified for quieter fan operation, also relay contacts have anti-arc gel in them, AC IEC input ruggidized, Gain of amp reduced 6db in level to work better & quieter). New.
