Audio Proz Service and Sales


Crown, BGW (Not certain)

Audio Proz Inv #: 60526

Module C-1. 2" high. Tube socket 11 pins out. For compressor. May need capacitors replaced. Looks intact inside cannot be certain of operation. #8 condition

$ 22  Contact Us  

Luxman m-12

Audio Proz Inv #: 60288

Fuse holder for DC Stereo Power Amplifier. Original fuse holder with original washer and nut. Great condition, completely in tact. #9+ Condition.

$ 12  Contact Us  

Revox A77

Audio Proz Inv #: 60134

Recording Amplifier #1077 705. Missing two trimmers, salvage from previous board, good condition, might need cap change out, #8 condition.

$ 28  Contact Us  

Technic SE-C01

Audio Proz Inv #: 59626

Unit is intact. No obvious failures in amplifier except DC to DC. Converter appears failed. Good Unit to build 1 out of 2. Condition #7

$ 24  Contact Us  

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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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


Marantz 3300 Model or 1200

Audio Proz Inv #: 58993

Volume control. 8 legs like original. 200K value will fit with 50K 100K or 250K use. 9+/10 condition (N.O.S unused).

$ 32  Contact Us  

Biamp 2500

Audio Proz Inv #: 58721

Parts for repair. 380004400 rev 8. AMP board only, intact low use and tested with switch. Output transistors listed 2SD746A, 2SB608A $28 each. 2 pieces or more to purchase 22 each.

$ 100  Contact Us  

(2) Mallory Type CGS 21000 MFD Positive+85C Biamp Capacitors

Audio Proz Inv #: 58693

For Biamp 2500, Max Surge 125VDC. 8/10 condition (known modestly used parts).

$ 28  Contact Us  

Bi-Amp 2500

Audio Proz Inv #: 58690

Rack Handles. 7+/10 condition. Obvious but minor scratches.

$ 20  Contact Us  

Phase Linear

Audio Proz Inv #: 58604

(3) Glass Bezel covers for Phase Linear VU Meters. Include a picture of your meter so we can match the cover to you!. 9/10 Very good condition.

$ 12  Contact Us  

Magnecord 420-04365 VU Meter

Audio Proz Inv #: 58603

420-04365 VU Meter. 8+/10 condition (minor wear on face).

$ 34  Contact Us  


We offer expert time-saving advice on repairing many types of home and studio equipment, as well as consulting for product and recording issues, at a fair and reasonable cost.  For complex matters, we sometimes must charge a small technical fee.  If we can help solve your repair problem or technical conundrum, give us a call.  (617)926-8020.


SMK Snap Switch

Audio Proz Inv #: 58598

E-41337. 9/10 Condition.

$ 14  Contact Us  

Sansui 4300831

Audio Proz Inv #: 58523

8 OHM meter. 170 W Rated. 4 1/2 inch x 4 inch. 8-/10 condition (Was N.O.S but has 1/4in scratch in glass face below meter number area.

$ 48  Contact Us  

Phase Linear

Audio Proz Inv #: 58508

55 OHM. For Phase Linear 700B amp. 4 1/2 x 4 inch silver face. 8+/10 condition (very minor unnoticed scuff. Tested and used).

$ 44  Contact Us  

Sansui QRX-3000

Audio Proz Inv #: 58286

AMP boards F-1358, 2 channel module, Repaired tested bias set, 2 available $68. Other boards, controls, knobs ect. available, CALL. Case cover scratching on side #7 $20.

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NAD 2140

Audio Proz Inv #: 58218

Unit requires major rework. Needs many capacitor replacements and an upgraded board regulator. Most important transistors OK. Face, mechanics OK. Worth transformers and output transitors. Needs service. 7 condition.

$ 48  Contact Us  

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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Re: International Shipping: We ship internationally often and have yet to encounter a problem or complaint. We are very careful to test the equipment before it’s packed and then to double box the machine with added protection when needed for front panels, etc. We are not amateurs or an ebay store; we know these machines very well and know what it takes to get them to you safely. We use USPS priority internationally which seems to be the cheapest. If you prefer another carrier (you should know who delivers to your area reliably) please let us know. Also please be aware of any tariffs that you may be responsible for upon pick up on your end. International shipping may be expensive but we will make sure it is not a headache on top of the cost. PLEASE NOTE THAT SHIPPING INTERNATIONALLY WILL BE A MINIMUM OF $16 EVEN FOR SMALL PARTS.


Phase Linear 700 Meter

Audio Proz Inv #: 57883

For cosmetic use, very minor unnoticeable finger wear, old version silver scale, #7

Vince notes that 4 meter variations were used in this model, please show us a picture of your meter to see if we can match it.

$ 14  Contact Us  

Phase Linear 700B

Audio Proz Inv #: 57858

VU Meter, clean face. #8

SOLD  Contact Us  

Contact us about similar items or replacement parts.

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

Audio Proz Inv #: 57495

Complete board with cut wire lead. Condition: 9

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Pioneer SA-9100

Audio Proz Inv #: 57314

Balance control 200k ohm. Substitute for balance control, High quality ALPS. Detented, click increments. Cleaned, lubed, exercised. Requires new holes drilled. Easy to mount. #10 Condition (New).

$ 16  Contact Us  

Elan Fan 2

Audio Proz Inv #: 56062

Low speed, virtually silent dual cooling fan. Nice slim rack package. Condition: 9

$ 30  Contact Us  

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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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.


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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AMP KD400

Audio Proz Inv #: 55029

Rubber feet set(4). 8-32 machine screws. Like new, 9+ ($6 full set)

$ 6  Contact Us