5 stereo inputs and full analog metering with selectable range. 3 stereo speaker outs, controls for bass, treble, compression, low enhancement, low and high filters, headphone output, stereo surround switching. basic updates to capacitors have been done. Very good #8 condition, professionally cleaned, calibrated, and tested.
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small compact mixer amp, 3 band eq section, 2 mic phone Ins, basic 60 watts PA system with a very rugged design
Multi-Headphone amplifier. RCA and 1/4" inputs. 2-space rackmount. 4 1/4" headphone outs with balancing level controls. RCA in or 1/4" separate left/right levels. All controls and switches cleaned. Very low use, excellent #9 condition.
Phono, tuner, aux, high quality phono inputs. With balance, bass, treble controls. 2 tape monitor. Front panel also has muting, loudness, subsonic filter and tone switches. 65 watts per channel with 2 independent speaker switches. All controls and switches, set bias and dc offset, resoldered circuit board where required. #9+ condition.
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2 channels each with equalization controls, Reverb, Shape control on lead channel, 1/4" FX send, Phone output for external speakers, Nice thick overdrive for face-melting distortion, this amp wants to shred. #9 condition. (A.P. Guitar folder)
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Power amplifier. Excellent #9 condition, professionally cleaned, serviced, and tested. RCA inputs, one set of speaker outputs, very nice output meters.
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Power amplifier. This unit has a bad tube and a bad fuse holder, otherwise a good machine for parts or hobbyist use. Contact us for more information.
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Dual mono design. 150watt/channel, 250watt peak power. 2 speaker switch. High quality relay. Excellent #9 condition, very low use. Professionally cleaned and serviced with some board resoldering.
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This unit can definitely be made functional, but it has some aged resistors that should be replaced. Please contact us for more information.
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2 channels, banana speaker connectors, 1/4" and XLR inputs, 15amp breaker. With AC cord, manual, original box. #9 condition with minor light scratches on top paint. Very low use.
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Integrated amplifier with remote. RCA ins for aux, CD, tuner, DVD, and AV/MD. Tape monitor loop, bass and treble tone controls, two speaker sets, and balance control. Excellent #9 condition with very minor scratches on cover.
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APT 1 Amplifier Upgrades and Repairs Technical Information: Read more about it here.
Includes stereo amp SE-CH515D, tuner and sound processor ST-CH505, and 3 disc CD changer SL-CH515, all professionally cleaned and serviced in tip top #9 condition! Includes remote control. Plays damaged discs and CD-Rs well. EQ space selection, Karaoke mode, v.bass mode. What a value!
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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Four input powered mixer. 2 XLR, 2 RCA, and EQ loop. Bass/Treble/Volume controls. Professionally cleaned and serviced. Excellent #9 condition.
Mono 20watt mixer and amplifier, very compact and can run on 12v battery! Aux/phono/two mic phone input connectors. Also works well as a guitar amp to mix in effects! Excellent condition, professionally cleaned and serviced.
Small 30watt combo amp with 6" dual speakers. Features overdrive controls, spring reverb, carpet cabinet. AP installed two new speakers, one heavy duty "thick sound," one vintage alnico "thin cone lead" sound. Two different drivers to create a very "high fi" little amp combo! Professionally cleaned, serviced, tested, with board resoldered for better reliability. Overdrive sound is not great, but very nice acoustic fidelity! Very good #8+ cosmetics.
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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Two channel power amplifier with 3-pin XLR male and female inputs. 120v, 600watts. One original channel module works correctly, the other has been repaired but still has minor problem. Bargain price! Please call for details.
35watt PA amplifier with two mic inputs and aux/phono inputs. Transformer output stage and nice EQ section good for voice or guitar. Excellent condition.
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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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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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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Solid state stereo amplifiers Scott kit, Tape, Phono, Tuner, Aux, Input Selections, bass, treble, balance, controls, wood case #8+ unit all knobs nice, all phono, input caps and transistor upgraded, unit probably could be upgraded with new EQ board capacitor
Email Us or call (617) 926-8020 for more information about ADA modifications and repairs.
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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High current control amplifier, 400 Watt, 60 Watt R.M.S. output, upgraded ground path for lower noise, replaced phono opamp with upgraded burrbrown (OPA #2604AP) for improved noise floor, REV3 # 10 NEW in box, with VU meters
