New old stock, never used. For two channel thermionic microphone preamplifier. White lettering with gray background and purple border. Perfect condition!
Add on 48 volt, some codes are color blue. Rental Unit excellent serious low noise class A preamp design. #8 condition.
8 channel mic preamp, add on 48v power, extremely high gain low noise full bandwidth mic pre, 2 space rack unit, excellent conditon
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
Mic Preamp mono, phantom 12/48v, super compact, can run on battery or with power supply
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Mini Mic Preamp - Mic preamp with 30v phantom power
Mini Mic Preamp - Mic preamp with 30v phantom power
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.
Mic preamp/compressor/parametric EQ. Demo unit, engineering sample. Excellent #9 condition with some minor scratches on top and bottom of case.
2 channel tube preamp. XLR, 1/4 inch in/out. New in Box.
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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All Remotes are now 25% off or Free Shipping!!! (Reel to Reel remotes excluded).
ACEM 70500852 - High quality, superior shielded, 600 to 50k mic transformer, 1" diameter, 12 available ($22 each),
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.
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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.
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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.
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.
Basic tube based design. XLR & Phone (1/4) in/out. Like new Demo unit. #9 condition
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Dual vacuum tube preamplifier. 2 channels, each with 1/4" and XLR ins/outs. Professionally cleaned and serviced. Some minor scratches on top cover.
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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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 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.
20dB pad/phantom pwr/phase reverse switches. Gain/Volume controls. XLR, 1/4 inch in/outs. Has premium Phillips 12AX7WA tube. Brushed aluminum face, small footprint with original power supply. Scratches on bottom of unit, minor nicks on top. Condition #9
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Single channel tube mic preamp, 1/2 rack space, XLR and 1/4" in/out
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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
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