Audio Proz Service and Sales


BGW 500 and 750 parts

Audio Proz Inv #: 45149

We have many parts available for BGW amplifiers 750, Heatsink: $20, 2N 3773 $6 each, SJ7394  $6 each, only these listed parts are available. Circuit boards # 9007-0750  with original parts and transistors appear to test good, board has no damage visible $58 each.

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ADA Microtube 200

Audio Proz Inv #: 43733

Power amp. Parts unit. Contact us about repair, parts, or replacement.


Vince has noted that although this was a clever and interesting product,
the problem is this unit suffered some very simple but problematic design flaws back then and Vince has always modified them to be reliable.

*This is not a recommended product unless someone like Vince knows how to resolve these issues*

We have better options if you would like to call. 

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APT amplifier face

Audio Proz Inv #: 43341

Some obvious scratches on edge but not unacceptable as a replacement.

$ 20  Contact Us  

Marantz Model 15 AMPLIFIER BOARD MODULES

Audio Proz Inv #: 43258

2 AVAILABLE.

$ 30  Contact Us  

Harman Kardon SR-600

Audio Proz Inv #: 38240

Vintage Harman Kardon Receiver, germanium transistor design throughout. Unit needs new capacitors and amplifier repair.

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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.


NAD 3300

Audio Proz Inv #: 27305

Unit is in excellent cosmetic condition. 2 speaker channels, bass EQ selection with sweepable 50Hz, 120Hz, and 250Hz ranges. Sweepable treble control with 3kHz, 6kHz, and 12kHz ranges. Tape copy selection with 1 to 2 and 2 to 1 options. Monitor 1 and 2 selection. Back panel connections, phono in with cartridge type selection. Tunier in, vidio in , DC in, Tape 1 and 2 in/out, main in, pre out. Unit needs many parts to repair amplifier section

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