Tube Preamp, opto-compressor limiter DI. Well done small box pre. Used demo. Original paperwork lost. Condition 9.
Tube Pre-amp system-has high quality super spec 12ax7 tubes (.25 to .5% 2nd Harmonic). 2 channels with balanced or unbalanced outputs. Input for mic and instrument. Very quiet unit even with use of guitar. Later model not as well voiced for guitar overdrives. Modifications are available - Please call. Low use unit # 8 condition. (Tube Test Demo unit)
High quality Mic-preamp and tube/ vactrol compressor. One time rental. Box packing. Condition 9
Studio control center. Project series. 10 condition. New.
2 mic in. 20db pad, gain control 80Hz low cut filter, polarity, phantom. With power supply. 9+ condition. Very low use time. Cleaned controls and switches. One rack scratch.
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.
2 channels, tube gain stage preamp design. Like new unit, has better high-quality power supply. Minor scuff on top. In rack. Condition: 9
2 channel tube preamp. XLR, 1/4 inch in/out. New in Box.
Two channel tube mic preamp - basic tube mic preamp, 48v phantom, in/out level led meter, 1 rackspace
Two channel tube mic preamplifier. New. Highly recommended product!
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.
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
Add on 48 volt, some codes are color blue. Rental Unit excellent serious low noise class A preamp design. #8 condition.
Two channel Mic/HiZ. M/S Matrix. Variable input Impedance. Variable plate voltage. QC- Lubed, Burn-in, switches exercised. #10 Condition (New).
Single channel mic pre EQ compressor. SN:S150861225. New
Like new. All QC checked by Audio Pro. Low noise tubes. In box with manual. #9 condition.
8 channel mic preamp, add on 48v power, extremely high gain low noise full bandwidth mic pre, 2 space rack unit, excellent conditon
Local customers, please do not come to the shop without calling ahead first - (617) 926-8020 - for an appointment, so that we can more efficiently help you with your equipment or sound recording needs.
Two Channel Tube Mic Preamp with digital outs. XLR I/O, 1/4 inch output. AES/EBU, SPDIF, ADAT, Optical outputs. Word Clock in/thru. Sample rate control. MS Matrix. Variable input impedence. Minor rack rash.
Two Channel Tube Mic Preamp with digital outs. XLR I/O, 1/4 inch output. AES/EBU, SPDIF, ADAT, Optical outputs. Word Clock in/thru. Sample rate control. MS Matrix. Variable input impedence. Minor rack rash.
Class A mic preamp. Tube Preamp, compressor, eq. Super spec unit. Special upgrade. Updated power supply to run any type tube, new, old etc. Unit can run on 90 VAC line current. Special bypass capacitors on power supply. New in box, QC - low noise spec.
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
Studio tube compressor/limiter preamp. AudioPro modifications to optimize tube gain and noise, power supply updates, phase switch pad and hi gain switch added on front panel. Excellent #9 condition.
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Modified vactrol variable transformer dynamic EQ, and variable tube bias mod. Professional tube microphone pre-amplifier. Tube/optical compressor. +48V phantom power supply. With true "tube gain cell" compressor. B stock. See more details about the mod here, https://www.audioproz.com/AP.php?Article=19&Tab=Modifications
Tube mic preamp/compressor/equalizer. AUDIO PRO MODIFIED: Tube Harmonic T.H.E. Bias control transformer in Vactrol EQ Mod. Highly recommended, Super noise spec machine! QC, Test All. #10 new in box