Audio Proz Service and Sales


Phase Linear 700B

Audio Proz Inv #: 57858

VU Meter, clean face. #8

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Crown D150

Audio Proz Inv #: 53609

Unit needs repair. Value for face plate and rack. Circuit board intact clean. Missing 739 IC. All transistor in circuit - circuit chassis should missing knobs scratched Cosmetic and mechanics are in excellent condition.

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Phase Linear 700B

Audio Proz Inv #: 59568

(2) Interior rotary switches $12. (1) power switch, probably for 700B $14. Please send pictures of your unit/parts to ensure a proper match!! 8+/10 condition, knob controls have typical slight oxidation.

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Yamaha CA-800

Audio Proz Inv #: 54421

Cabinet #9, $26. Knobs #9, $6 to $8 each. Boards and parts. Whole unit could be use to build one perfect unit from two. Unit intact, needs serious amp fix on one channel.

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Behringer KX1200

Audio Proz Inv #: 53213

I/O board. 7 1/4", 2 RCA L/R, 2 XLR M/F connectors. PCB#204040REVE/02. #9 condition

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Need your guitar or bass amp tuned up? We are now doing repairs, upgrades, and modifications to all types of guitar amps. Orange, Mesa Boogie, Fender, Marshall, Hughes and Kettner, Peavey, Ampeg, Gibson, Silvertone, etc. Read more about it here


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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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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Yorkville AP2020

Audio Proz Inv #: 60796

Power amp, two input and output channels. M1131 Board (version 3.00). Unit has bad low level power supply board and one amp board has minor problem. #7 condition, worth parts.

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Yamaha CA-800 Amplifier

Audio Proz Inv #: 54289

Yamaha CA-800 Amplifier, 1 channel has major failure. Natural sound stereo amplifier, 2 aux in, tuner in, 2 phono in, mic in, A,B,A+B Speaker selector, tape selector, tone defeat switches normal, Class A operation selector, high filter, low filter, silver face. Shorted output on left channel, good face, knobs or for repair.

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Kenwood Basic M2A FL Driver Board X25-2470-10A/2

Audio Proz Inv #: 57495

Complete board with cut wire lead. Condition: 9

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Pioneer Spec 4

Audio Proz Inv #: 52547

Intact but in #7 condition. Parts available: (2) meters-$48 ea, (1) face with handles-, minor obvious scratches  (Call for pricing) (1) good amp board-$200, (2) filter caps-$30 ea, (2) Rear "bumpers"  (SOLD). 

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Please be aware there is a minimum $4-$6 to ship any part. International orders will be $14-$16 to ship for anything larger than an envelope. Shipping costs are non negotiable, so please, PLEASE do not ask for a part, or for us to search for, or quantify a part if you cannot pay for the shipping.


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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AR Amplifier parts

Audio Proz Inv #: 45161

We have many AR amplifier parts available, including transformers, capacitors, knobs... Board #EC1-B (Supply and Regulator), AR Controls Board, 2981-0 amplifier board. Please contact us for information. It will help if you can supply pictures of the parts desired. Parts generally cost between $8 and $20 each.

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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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Lectrosonics Maxi Mouse

Audio Proz Inv #: 55478

Main PCB assembly. Controls, switches, jacks. Silver and blackface faceplates. Available for various parts. Call (617)926-8020 for availability of specific parts.

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Hafler 500

Audio Proz Inv #: 55473

Bad solder joints and corrosion inside of machine. Right channel has failure - possible predriver. Low level caps need to be replaced. Fuse holders unsecured. Most mosfets good. Cosmetically OK, minor scratches/corrosion. Unit sold as is for parts. Call (617)926-8020.

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Luxman TCQ0065 DML-2 module

Audio Proz Inv #: 47583

11 pins on open circuit board. This is the original substitute module supplied by Luxman. New old stock, two pieces available.

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We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock. 

Customers outside of the US, please note that international shipping can be costly (US Post $16 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.


Hafler DH-220

Audio Proz Inv #: 53593

Stereo Amplifier. Good cosmetics, mechanical condition. One channel bad, strange problem but board in tact. 1 Channel perfect. #7 Condition.

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Lectrosonics Maxi Mouse various parts

Audio Proz Inv #: 48560

R1379229 dual 100k control $16, R1379238 10k control $8, 3-position switch $6, amp IC TDA2002 $6. Other parts may be available.

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various types of capacitors

Audio Proz Inv #: 48623

We can supply many types/values of capacitors. 2200uf 80wv Nichicon $4, 1000uf 50v ELNA $3, 2000uf 100v ELNA $8, 10000uf 63v Nippon Chemicon $14, 6800uf 80wi Daewoo $6. Many types, some new, some salvaged and tested for vintage Pioneer, Marantz, Kenwood, Sansui, etc. Call directly for specific values.

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KLH Model 11 power cord

Audio Proz Inv #: 49924

2-prong AC cord (white) 5/16" pin spacing (read listing carefully KLH made 4 variations of AC cords)#8 condition. (2) available

*** Unfortunately 3 prong connector version is not available presently.***    It's the rarest one. Try a hardware store, sometimes by luck it can be found there, but three variations of these exist and it must match your unit. If you get desperate to get it running, we will install / adapt another cord. We can do service on these machines.  COULD NOT FIND PAPERWORK

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Scott Stereomaster LK-60

Audio Proz Inv #: 50412

Good, intact unit for hobbyist use, in need of replacement capacitors.

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GAS Meters

Audio Proz Inv #: 57942

5 inch by 4 inch, meters have obvious light scratches, windows could be exchanged. #7+ $32 each.

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We are a very different kind of shop. To help ensure a smoother experience please read our letter about our current shop policies.

We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock. 

Customers outside of the US, please note that international shipping can be costly (US Post $16 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.


KLH Model 11 2-prong AC cord

Audio Proz Inv #: 49868

5/16" spacing between pins on input to unit. Black color cable. Excellent condition. (Read listing carefully KLH made 4 variations of AC cords) Please show us a picture of your AC connector to guarantee proper fit replacement. M.P.W.

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Towa Electrolytic Capacitor MLS-Z CE33B 15000uF

Audio Proz Inv #: 51634

80v power supply capacitor, screw post mounting (1+1/8" c to c), 2.5"w x 3+1/8"h. 1987 production, excellent condition, two pieces available. Parts Sold Paperwork not found

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