Hi Quality Phono pre and computer I/O, Line / phono input select. 1/8" headphone monitor with level adjust. RCA ,s/pdif & optical connections. USB or extermal power power supply (includes USB cable but not external supply-thoes can be purchased seperately)
USB dual Pre. 2 channel. Computer interface. Project series. 10 condition. New.
Receiver converted into PREAMP. Black faceplate. Phono, CD, Video 1, Video 2, Tape 1, and Tape 2 inputs. 10 tuner presets. Built on (non-original) volume knob, with cut hole for LED indicator. #7 condition
We leave "SOLD" items on our website for machines that we often repair and provide parts for. This is to give you an idea of the products we typically carry, and direct you to alternatives you may not know about - we often have substitutes for out-of-stock parts, and are happy to recommend workarounds and different solutions to common problems.
Basic as new demo high quality phono preamp. 9/10 condition.
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.
phono preamplifier, variable preamp gain, RCA outputs, new in box, OUR RECOMMENDED PHONO PREAMPLIFIER! #10 condition
Guitar amp modeler/direct recording preamp/DI box. New.
Customers outside of the US, please note that international shipping can be costly (US Post $16 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.
Phono preamp with RIAA equalization. (This is a Mono Device) , Uses 8-pin socket connector. (1 only) Excellent #9 condition.
Basic phono to line level w/ RIAA equalization, RCA / 1/4" TRS output (line level), 12v DC power supply included, Small and compact (4"x2.75"x1.25"h), Original box and manual, Used in Excellent condition #9
Basic phono preamp, 1 stereo input, 1 stereo output, Black case (4"x2.5"x1.5"), Good condition (#9)
Slim line aluminum, Linear phase EQ! Very high-quality parts & controls, exc phono pre. (1 module pulled - - no phono!)
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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
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.
super low input with super low noise board, tested, may need cap update soon, condition #9
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Stereophonic Preamplifier. SN: AK2903. Aux, Tuner, Phono 1 & 2, Mic, and Tape HD Inputs. R/L Controls for both Bass and treble, headphones, and tape in/out jacks. This unit is fully serviced and tested. One capacitor added to improve power supply. Cleaned all controls, switches, jacks, tightened connectors, checked phono noise, and a 2nd switch cleaning. Includes all original packaging, owner's manuals, factory harmonic distortion test graph, cabinet available also. #9 condition
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Control Preamp w/remote, 7 band program band EQ, nice FIP readout, cleaned and tested OK
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Original version, really nice lightly stropped gray face coloring with light gray purple knobs, nice look with rare and interesting version of cosmetics but still has the look of APT coloring, All Level III Audio Pro Mods, phono update, headphone mod, all audio cap all PS caps, Relay mod, Image control mod, EQ mod, Tone control mod, #9 Condition
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Modern, semi-audiophile unit, 4-bd eq, black modern unit, tuner, phono, aux, tape, phone jack, mute, eq bypas etc.
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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
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Need an APT unit serviced or modified? Vince, the owner of Audio Pro, ran the production line at APT for many years, and has decades of experience working with APT products. Read all about our APT Holman service and mods here. Also read about the APT Moving Coil Phono Mod Here.
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
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stereo w/sonic holography, inputs: 2 aux, tuner, 2 phono (1 for MM & MC), stereo/mono switch, speakers on/off, 2 tape/monitor loops, dubbing 1 to 2 & 2 to 1, loudness, tone on/off, 2khz & 8khz turnover switch, separate bass & treble for each channel, power switch is not operational. switch jumpered to lessen noise in pre amp.
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