Quadraphonic amp, phenomenal condition
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4RU rackmount power amplifier. Channels 1 and 2 level controls on front panel, quarter inch audio inputs and banana terminal speaker outputs on back panel. Very good #8 condition with some minor nicks and scratches and one original knob has minor chip in edge. Professionally cleaned and serviced; AudioPro power supply upgrade with all new capacitors.
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1200 Watts demand responsive amp. Left/right RCA inputs. Banana post outputs. Fault indicator LED. Left/right power level LEDs on face. Brushed grey finish with rack loops. Later improved version "rev d" boards. Virtually unused. Fully serviced. Has original box + packing + manual. 9+ condition.
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Rackmount Face. Black color with bronze rack handles. Quasi Class A FET design. 100 Watts. New power switch. All cleaned, calibrated. Bias & DC offset OK. Ruggedized circuit board soldering. Minor scratches on some edges--nice low use machine. 8+
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High quality circuit design, reliable, 4 space rack mount, later version production. #9.
We can Repair/Service this model and similar amps. Call for more info. 617-926-8020
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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.
Graphic EQ 5 band. Inputs: Phono/tuner/CD/TV/Tape monitor. 70 watts/channel. Actually an audiophile grade amp design. Tested, serviced, cleaned, working. Due to visible scratches on top cover condition #8.
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Dual monaural construction. Stereo power amplifier. Back panel level control, 2 way speaker switch. New capacitors installed, including bypass capacitors. Good quality relays UPDATED. Nice condition, low use time. 9. We can do a capacitor rebuild on this model for $200-300.
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2x10 combo amp. With 24 bit analog modular NICE effects and tuner. 2 channels. Stereo line out, stereo lave in, insert loop, aux in, tape in/ out, phones. midi in. Jensen speakers. 8 Condition Minor tole and tears.
Pro rack mount amplifier. Excellent build quality. Condition is like new, impeccable with box and packing, all serviced and cleaned and mechanically and cosmetically in top condition.
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15"inch driver, inputs: bass/guitar/flat. Controls: volume/bass/treble. Modified power supply switch. (3x) ruggedized board, power on indicator lamp, tolex (black) with metal corners. Unit has been double checked.
Integrated Amp, 2 phono in, tuner in, aux in, 2 tape monito in, 2 independant speaker outs, 5 band EQ, excellent amplifier design - Nice Style. Modified to improve grounding and power supply, unit is all cleaned and serviced
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We know you have many options for purchasing audio equipment and parts, and we truly appreciate your business. We strive to offer good products at competitive prices. While we can't always match the prices of one isolated reseller, we make up for it by carefully selecting, testing, and finding unique and special rare parts, and we are here for the long run. We guarantee everything we sell and we hope it helps you to enjoy a great listening experience.
100 watt, rack mount. Unit has quieter version fan by design. Bias, hum, noise is exceptionally low. Audiophile version spec. 10.
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Tube design Mono block Power Amplifier (SN: 09209) Beautiful Silver brushed aluminum face with white VU meter, attenuator control, and 7 position bias control. RCA inputs , 2-4 Ohm & 6-8 ohm output posts. (no tubes supplied in this unit) Fully shop serviced, clean and calibration. Excellent condition cosmetics #8+ (few very minor top & side scuffs)
Aluminum silver face, extremely excellent built, integrated amp, well done Fisher equilizer, blue backlight, Meter 80 watts per channel, 5 band equilizer, 2 independent speakers, high quality phone in, 2 tape dubbing monitoring tuner/phone aux in, 2 headphone. Very thoroughly serviced. condition #9
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w/remote. 100 Watt. Audiophile grade. Amplifier design. Many inputs, but unit has ground jackets torn off Of RCA for AUX and video in. Low use/bargain unit Condition #7
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Stereo amplifier. Mic, phono, tape, tuner, aux selection. Bass and treble controls. Loudness, tape monitor, mono select. Low use, unit has seen minor water damage on top, but performance has not been affected. Set bias/DC connector. Replaced various low level audio capacitors with higher quality mylar. #8+
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Factory assembled and modified later version unit, with higher quality parts and high speed bypass caps. Features RCA L/R inputs and fused outputs. Fully serviced and calibrated, low use unit, with some minor scratches on top cover. Condition: 8-
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APT 1 Amplifier Upgrades and Repairs Technical Information: Read more about it here.
RA-970BX. Slimline, black. Basic Integrated amp. No phono in. CD, 2 AUX, 2 Tape, Tuner. Bass/ Treble controls. Cleaned and re-enforced. Connections, 60 Watts per channel. Comes with box and manual. #9+ condition.
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30watt per channel tube amp with recent set of EL34tubes and 7199 predrive tube. Unit has many updates done to improve reliability and fidelity. Shop engineering unit used to demonstrate updates of tubes. Good #7 cosmetic condition with obvious rust spots on chassis.
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Rackmount, black metal face with handles. 80 watts per channel audiophile amplifier. Excellent condition, very low use time, professionally serviced, calibrated, tested.
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Very nice stereo integrated amplifier receiver with NAD-authorized updates done by AP, new board soldering, high quality replacement Japanese capacitors, fully serviced and tested. A/B speakers select, bass/treble control, mono select, tape1/tape2/phono/tuner/aux inputs. Very low use time, excellent cosmetics except for tiny rub on upper left corner.
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Tape 1/ Tape 2, tuner, AUX, Video, CD, Disc, input selectors, bass, treble, tone, balance, volume, controls, high quality phono input, nice basic design, 80 Watt amp, discreet-transistor, high current design amp, missing remote, #8+ condition, minor face rub, re-soldered main circuit to make rugged, long term reliable
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High current control 200 Watt, audiophile mostly discreet circuit design, super low noise, high quality amp 115/230 volt operation, audiophile tone control operation, REV 3 MOD, with remote and instruction manual, #10 New unit
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Email Us or call (617) 926-8020 for more information about ADA modifications and repairs.
Integrated amplifier, 2 tape inputs, 2 headphones, Bass/presence/treble controls aux in/ tuner/ 2 phono inputs (phono/impedance loading with phono sensitivity switch). Unit has seen very minor water damage; 1 channel is out, face plate and knobs very good condition (missing loudness switch cap), case is rough-missing front fold down panel. Unit is good for boards knobs, one amp channel. *cleaned and lubed*
Single Rack Studio Linear Amplifier. 100 Watts x2 @ 8 ohm. 260 Watt bridged mono. XLR and 1/4 ins, Banana outs. Silent thermal dependent cooling system. Modified low noise fan, optimized bias. Minor rack mount rash. Condition: 8+
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