Audio Proz Service and Sales


Teac DX-8 noise reduction board

Audio Proz Inv #: 44751

Part #60502881. Excellent #9 condition, tested and working.

$ 68  Contact Us  

Teac DX-8 power supply board

Audio Proz Inv #: 44746

Tested, in excellent #9 condition.

$ 68  Contact Us  

Teac 4T 2CH Play Head

Audio Proz Inv #: 55650

1/4" tape, 50667320, High density ferrite head, salvaged from low use machine

$ 68  Contact Us  

Teac 4T 2CH ER-R

Audio Proz Inv #: 55648

50667420, high density ferrite head, 48.4.9, salvaged from low use machine

$ 68  Contact Us  

Teac 4070G

Audio Proz Inv #: 55646

4T 2CH Play Head, 50667320, High density ferrite head, 48.4.13, Guaranteed no head wear, salvaged from low use unit, 9+

$ 68  Contact Us  


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.


Tascam 38 8tr 8ch erase head

Audio Proz Inv #: 46967

Part #53783002. Very good #8+ condition.

$ 68  Contact Us  

Revox A77 two track record head

Audio Proz Inv #: 46707

#022 Revox two track record head for 1/4" tape, non-cutaway head version. Very good #8 condition condition, relapped head.

$ 68  Contact Us  

Teac card extender connectors

Audio Proz Inv #: 48023

Teac part #52101125-00 WEC-4, Extension A PCB. Used for troubleshooting applications. Pair in like new condition.

$ 68  Contact Us  

Otari 5050 BII Motor Speed Board

Audio Proz Inv #: 56211

Motor speed board YG-6731 94V-1. Used board. Intact, clean. Came from working machine. Capacitors in circuit check OK. Comes with partial motor with hall effect sensor board.

$ 68  Contact Us  

Teac 4300 Side boards

Audio Proz Inv #: 50723

Left and right boards, may fit other models. Wood walnut (18.5" x 7.5" x .5") Hole HT 3.75", minor scuff on side, small chip on corner of side panel. 8 screws with 4 inserts (missing 4 inserts) #8+ condition

$ 68  Contact Us  

Revox A77, B77 NAB Reel Hubs

Audio Proz Inv #: 59314

Used pair obviously worn and stained, but mechanically intact with new O ring kit. $68 for the pair. 7/10 condition.

$ 68  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.


Otari MX 5050 BII HD

Audio Proz Inv #: 51225

 logic board PB9A562A #PB-46R with 1-0012 IC. #9 condition, Salvage from working machine.

$ 68  Contact Us  

Revox A77 047 play head

Audio Proz Inv #: 51629

Lapped and tested, 1/4 track stereo.

$ 68  Contact Us  

Revox A-77 /B-77

Audio Proz Inv #: 51632

027 Model, 2 track head play, head was 70% good but now is relapped #9

$ 68  Contact Us  

Pioneer RT-707 control function board RNP-370

Audio Proz Inv #: 52499

RNP-370 KRK-1394V-0, complete with two relays, wiring harness and switches (ffwd, rewind, stop, play, pause). Used in excellent condition.

$ 68  Contact Us  

Tascam 34 flutter roller

Audio Proz Inv #: 54715

Flutter roller and cap. 9 condition.

$ 68  Contact Us  

Pioneer RT-701

Audio Proz Inv #: 59736

Face Plate. 2-3 scuffs near control buttons, minor rack rash rest of front looks fine. #8+ condition

$ 68  Contact Us  


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.


Pioneer RT 701 power supply and logic board

Audio Proz Inv #: 61820

#RNP-444 (RWG 089), with capacitors and heat sink

$ 68  Contact Us  

Tascam 34

Audio Proz Inv #: 63500

Power supply board 5210074300, tested OK #8+

$ 68  Contact Us  

Pioneer RT-909 Front Take Up (Right)

Audio Proz Inv #: 70582

Tape tensioner assembly complete with switch. #9 Condition.  

$ 68  Contact Us  

Pioneer RT-909 Supply Side (Left)

Audio Proz Inv #: 70583

Complete with switch. Works perfect. #9 Condition. 

$ 68  Contact Us  

Tascam 388 Bal Amp PCB

Audio Proz Inv #: 70620

Part #: 52101735-02. Tested Good, #9 Condition. 

$ 68  Contact Us  

Tascam 388 Input PCB

Audio Proz Inv #: 71271

52101732-00, 2 available, all controls cleaned, condition 9. 

$ 68  Contact Us  


We have been selling and repairing professional and consumer audio equipment for over 40 years. (Read some of our customers testimonials here)

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.


Tascam 388 Reel Table Felt

Audio Proz Inv #: 71274

1 available, condition 8+

$ 68  Contact Us  

Teac A-2300 reel table

Audio Proz Inv #: 71313

2-3/4 inch diameter, good lock spindle. #9 condition.

$ 68  Contact Us