Had 10dB higher gain preamp. Full audio pro rev 6 modification. Has T.H.E. tube harmonic equalizer circuit. Updated mic pre with RFI suppression. Updated tube plate volts. Updated low frequency EQ predominance. Phase corrected filter. (No loss of extreme deep bass) Has complete mod of tube vactrol auto compression and EQ at 0 dB. SN 4930. Has box. Condition #9
Like new. All QC checked by Audio Pro. Low noise tubes. In box with manual. #9 condition.
Basic tube based design. XLR & Phone (1/4) in/out. Like new Demo unit. #9 condition
ACEM 70500852 - High quality, superior shielded, 600 to 50k mic transformer, 1" diameter, 12 available ($22 each),
Add on 48 volt, some codes are color blue. Rental Unit excellent serious low noise class A preamp design. #8 condition.
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
2 channel Tube microphone amplifier. Adjustable gain, impedance, and master output level. Instrument input (high Z). Low cut filter (adjustable). Plate voltage: Normal/High. Worn box mint unit demo unit for rental #9 condition
high-end vacuum tube preamplifier with preamp modeling technology, 20db pad, +48V, low cut phase reverse, 16 preamp voicings, neutral, vocal, guitar, piano, etc... excellent condition with original box/packaging/manuals, a few very minor marks on unit but looks and sounds great, #8 condition
Dual mic pre-amp, polarity: 0/180, 15dB pad, gain adjustment, balanced/unbalanced, line input + outputs, �" phone jacks, mic inputs: XLR, power supply: 12V AC 400mA, special knobs installed for RFI on audiophile caps and grounding updates and precise gain tweaks, channel gain matching and 2db better noise floor, #8 condition
Professional tube preamp/opto compressor - limiter/DI, hand-selected 12AX7a tube, +48V phantom power, #10 new in box
Professional tube preamp/opto compressor - limiter/DI, hand-selected 12AX7a tube, +48V phantom power, #10 new in box
Built in 12AX7A tube, XLR and ¼" inputs and outputs, single channel, includes 9V AC power supply, #10
Read about some of the modifications we do to mic pre's, ART Pro Channel Modification, ART Pro MPA Mic Preamp Modification, ART Pro MPA II Modification, and ART TPS II Modification.
Built in 12AX7A tube, XLR and ¼" inputs and outputs, single channel, includes 9V AC power supply, new in box, #10
Modified with transformer, Automatic EQ compressor. This design allows deep bass and impulse response to be enhanced and less high frequency attenuation and clarity enhancement circuit. Unit has a ground modification and capacitor update for 6db noise floor improvement. This version has a 4560 op amp upgrade for line out balanced out. Mic pre amp RFI suppression capacitor. Modified with first stage tube harmonic bias control (right control) Cleaned switch with silver paste. #9 condition
Studio control center. Project series. 10 condition. New.
Tube Mic pre amp single channel XLR & outs & 1/4 INS (unbal). Phantom power 9vac Supply. New in box # 10 condition
Tube Preamp, Compressor limiter. New SN: S150760298
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Single channel mic pre EQ compressor. SN:S150861225. New
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
Tube Preamp, opto-compressor limiter DI. Well done small box pre. Used demo. Original paperwork lost. Condition 9.
Two channel Mic/HiZ. M/S Matrix. Variable input Impedance. Variable plate voltage. QC- Lubed, Burn-in, switches exercised. #10 Condition (New).
Variable impedance. Two channel MIC/HIZ. M/S Matrix. Variable plate voltage switch. QC Lubed, exercised, burn-in. #10 Condition (New)
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Two Channel Preamp/ Computer Interface. #10 Condition (New).
Unit has Super modified with fast slow compressor, many mods: updated power supply, added RFI protection on XLR, installed better output drive XLR op amp and high quality low noise Mesa Boogie 12A77 tubes, cleaned controls and used dielectric lube in switches. Low use time, very minor rack rash at holes. Face is cosmetically perfect. Condition: 8+
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Transformer coupled class A preamplifier. Variable input / instrument input, compressor, parametric EQ. Very low use, minor rack rash. Can be updated to remove SMD caps + replaced with better caps input/output balancing line caps.
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Mic pre with compressors and parametric EQ. Tubes: RCA vintage 12AT7, Sovtek 12AX7. Selected tubes for higher tube character, real nice 12% distortion. Like new demo unit with clean controls, resolder ruggedized board, no rack rash, and original operator's manual. Condition: 9
Tube line amp - 2 channel. 1/4 inch and RCA in/out per channel. 1 rack space unit. check and select tubes for channel and nice second harmonic enhancement with high quality controls. Unit can produce nice "soft sag" for guitar in studio. Nice soft clipping.
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