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 as new demo high quality phono preamp. 9/10 condition.
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
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.
5 line inputs, (no phono) with original remote control, (face plate lettering is dim) Be careful in sleep mode (button), powered on unit may look to be off ! # 7 condition.
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)
Set for 100Ω impedance but this version can be reset to as low as 20Ω, low noise spec, no capacitor update but unit performs perfect, low use, QC check, #9
Basic Preamp. This is an excellent quality product, with high quality controls, switches. Input switching IC is same as expensive products. Low noise op amp for phono. 3 band eq. Some ground mods were done. rack mount. #9 condition
Mc pre-amp board. Complete. Good condition. Tested and working. Has original caps. #9
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4-channel mixer with 3-band sweepable equalizer per channel, PA send, and separate monitor send. 3-rack space unit. Excellent condition, cleaned, serviced, tested.
Tuner, Aux, CD, Phono, Mic inputs. Bass, Mid, and Treble EQ controls. Made minor modifications to make perfect level and EQ match between channels. New stock, QC'ed.
MM Phono preamp, updated power supply, replaced power cord, checked for noise - floor is excellent, Condition #9
MM & MC inputs, Simple slimline design using super low noise AD744 OP amp. about 6db of gain extra for MC. Audiophile grade components. Bench test QC, all OK. #9 condition
FM/AM tuner, phono, CD, tape 1/2. Balance bass and treble controls. Unit has full service, including all cleaning and FM tuner alignment. Minor scratches on cover, some finger wear on controls, missing 1 memory button. #8 condition.
preamp control unit only, requires special cable/connector, tested ok, condition #9
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.
Set for 100 ohm impedance, but can be changed per customer request. (15db gain modified). All caps updated / recapped, noise check, EQ check.OK #9 condition
#201/202. Moving coil preamp for Holman. Set for 100ohm input impedance, but can be changed per customer request. All caps updated, with noise check and EQ check. New old stock.
Phono preamplifier/equalizer, Mint Condition Cosmetically, Mono Vintage device in brown bakalite box with brass face plate, for 78 equalization, unit has powersupply upgrades, cleaned and serviced.
Black face/rack mount, digital AM/FM 10 presets, excellent tuner, use of head phone jack stops audio output by design, FM battery memory OK, re-soldered power supply board and minor service updates, cleaned and calibrated, cleaned all connectors, 1 Phono, 3 Line-ins, 3 Tape loops, NO REMOTE, Condition #8+
Tuner Preamplifier, Very good tuner, Digital Display, Excellent condition, PS and ground mods to eliminate hum, modified headphone out to be super quiet
Excellent Condition. 3 Tape ins, spare EPL external processor loop, 2 speaker switching capable. Many modifications and updates, most capacitors in audio circuits and upgrade some power supply capacitor clean all controls switch.
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Excellent basic design, two tapes, 1 aux, no phono, excellent FM, presets. All clean/calibrated. with remote control. #9 condition
Class A circuitry design pre-amp, very clean sounding unit, very good condition black one-sapce rack mount.