Audio Proz Service and Sales


Harmon Kardon 330B

Audio Proz Inv #: 71955

Vintage silver face, green FM dial, AM/FM stereo, phono/tape amp/AUX, bass and treble EQ, stereo balance control. Fat vintage sounding design, all serviced FM alignment, some bulbs done. Condition #9

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Marantz 2240 Stereo Receiver

Audio Proz Inv #: 72138

All updated blue front panel bulbs, installed RFI protection capacitors in phono stage and amp board and volume control, updated some basic power supply parts, relay update, excellent FM calibration, all mylar bypass power caps on gain level of volume control, main supply and amp board is now nicer range in middle, RCA jumpers at in/out amp, 1 pair of output transistors replaced, wood case, minor little chips tiny scratches, unit has seen very little use,  condition #9

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Sherwood RA-1140

Audio Proz Inv #: 72102

AM/FM receiver, slim line nice basic unit - black, orange digital display, quartz lock tuner, 18 presets, inputs: tape, aux, CD, phono, 2nd set speakers allows surround sound effect, inserting headphones will disconnect speakers by design, low use unit, all basic service, condition #9

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NAD 7130

Audio Proz Inv #: 72145

Basic receiver, CD, phono, aux, tape inputs, soft clip circuit, FM calibration, 5 preset FM, 50 watt per channel, Taiwanese made, ruggedized board soldering, upper right hand front panel chipped, unit has low use time, removed connector glue, some basic NAD and A.P. updates, some capacitor changes, condition #8+

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NAD 7155

Audio Proz Inv #: 72391

70 Watt per channel, excellent best series design from NAD, has moving coil preamp board installed, Japanese version with better grade parts and Nichicon capacitors and boards, connectors etc. double up power switch, clean all controls 2 times, some updates of capacitors and touch up ruggedize board soldering at amp board and regulators circuits, upgrade speaker relay. Memory battery okay. FM calibration is excellent,.. unit in very low use condition, was stored for years due to minor problem. Condition #9

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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.


Yamaha RX-A700 AV Reciever

Audio Proz Inv #: 72119

90 watts (x7), FOR USE AS BASIC STEREO RECEIVER, multi channel input and PreOuts, Sirius Ready, Remote Included, NO phono input, NO HDMI or 5.1 function, checked for functions, dust shield added, Double Relay, Condition #7

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Sony STR-AV1070x

Audio Proz Inv #: 72397

Black face AM/FM Receiver, 3 tape loops, 1 DAT loop,  CD and Phono inputs, 7 band EQ with spectrum analyzer.  Re-soldered main board where required, buffed & cleaned relay contacts & surround relays. Better quality Sony product. (remote not included) Good condition low use unit. #8+ condition.

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Yamaha CR-820 Stereo Receiver

Audio Proz Inv #: 72324

Silverface w/ Wooden case. High quality relay & Capacitors. Relay cleaned and serviced (2023). Ground mod added to reduce low level hum and noise. High quality solder throughout all boards. Any weak solder points were reinforced to be more rugged. Tuner varicon is very clean and has excellent FM stereo lock in (this design does require tuning into target station slowly to achieve full FM stereo lock.) Unit has seen very little use time. Original bulbs are still good. Cosmetically and functionally excellent.  Faceplate is very clean with only minor signs of wear. Wooden case is in excellent, very clean condition. All rear connectors and faceplate knobs are completely intact and in excellent, clean condition with only minor wear/ staining from age and use. #9 Condition.

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Pioneer SX-850 Stereo Receiver

Audio Proz Inv #: 72884

Beautiful, silverface vintage Pioneer design. Capacitors in power supply were replaced and upgraded. Old caps weren't bad but were upgraded regardless. FM indicator bulb was replaced, has a slightly stronger orange glow than the rest of the indicator bulbs but it looks nice. All controls and connections were double cleaned and tested. Relay was removed, cleaned, serviced and re-installed. Solder points on power supply board were reinforced and made more rugged. All 2SC1313 transistors were replaced with 2N5500 lower noise type transistors. Some resistors in power supply were upgraded as the original parts are known to heat up over time. 6db pad added to amp board for a nicer range/ response from the volume knob. FM was calibrated and has excellent stereo lock-in as well as signal strength. Faceplate and display are in good condition, some light scratches on the top of faceplate. Wooden case is in great shape with only some minor signs of wear on the corners/ edges. All controls and connectors are in good condition with only light signs of use and wear. Very low use unit, cosmetically and functionally great. #8+ condition.

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