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  


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.


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 know you have many options for purchasing audio equipment and parts, and we truly appreciate your business.  We strive to offer good products at competitive prices.  While we can't always match the prices of one isolated reseller, we make up for it by carefully selecting, testing, and finding unique and special rare parts, and we are here for the long run.  We guarantee everything we sell and we hope it helps you to enjoy a great listening experience.

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.


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  


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.


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  


Local customers, please do not come to the shop without calling ahead first - (617) 926-8020 - for an appointment, so that we can more efficiently help you with your equipment or sound recording needs.

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