Audio Proz Service and Sales


Otari MX-5050 B2

Audio Proz Inv #: 50882

Function button housing frame for edit speed etc #9 condition

$ 14  Contact Us  

Otari MX-5050 B2

Audio Proz Inv #: 50873

Control knobs for mic and line for input controls and output channel 1 and channel 2, #9 condition, black (2) control knobs. All for $14!

$ 14  Contact Us  

Otari MX-5050 B2

Audio Proz Inv #: 50881

Ass'y no. PB78IA #PB9A504A read carefully, head block, erase rec play, mono heads, with 2 track playback head and P.B. head switch #8 condition, 20% head wear

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Otari MX-5050 4SD regulator transistor

Audio Proz Inv #: 51242

S1-3250E, 2SA748.

$ 12  Contact Us  

Otari MX-5050 20k output control pot

Audio Proz Inv #: 46757

20Kohm, A. Excellent condition.

$ 14  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 20k control pot

Audio Proz Inv #: 46756

Linear control potentiometer. Excellent condition. 20kA

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Otari MX-5050

Audio Proz Inv #: 62208

(pair) Swivel mounting plates with locking swivel knobs. Allows deck to be tilted in stand or rack, and locked into position.Used, #9 condition.

$ 48  Contact Us  

Otari MX-5050

Audio Proz Inv #: 71419

Top grill with metal frame. Grey with slots. Condition 8+.

$ 32  Contact Us  

Otari MX 5050B II Pinch Roller

Audio Proz Inv #: 42113

1/4" pinch roller X50BO BII, Inner brass bearing, Aluminum core, 1 1/2cm thick, 3.9cm diameter , new mint #10 condition.

$ 66  Contact Us  

Otari MX 5050 tape guide tension arm

Audio Proz Inv #: 51238

2.25" long, black stem, excellent condition. Please show us a picture of what you need when requesting parts.

$ 16  Contact Us  

Otari MX 5050 Meter Board PB9A169A

Audio Proz Inv #: 51235

excellent condition.

$ 18  Contact Us  


All Remotes are now 25% off or Free Shipping!!!  (Reel to Reel remotes excluded).


Otari MX 5050 Biii meter board PB9A483A

Audio Proz Inv #: 51236

excellent condition.

$ 18  Contact Us  

Otari MX 5050 Biii logic board PB-4RNA

Audio Proz Inv #: 51237

PB-4RNA, PB-9B647A, very good condition.

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Otari MX 5050 Biii counter face window

Audio Proz Inv #: 51234

excellent condition.

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Otari MX 5050 Bii pitch control and LED

Audio Proz Inv #: 51224

M 500 ohm, B. Excellent condition.

SOLD  Contact Us  

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Otari MX 5050 Bii LED counter board PB9A396A

Audio Proz Inv #: 51227

excellent condition.

$ 28  Contact Us  

Otari MX 5050 BII HD

Audio Proz Inv #: 52954

Memory/ reset control. Faceplate. Black 3 3/4" long.

$ 12  Contact Us  


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.


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  

Otari MX 5050 Bii flutter tacho opto assembly

Audio Proz Inv #: 51228

Flutter, tacho roller, rubber and axle assembly, opto complete, excellent condition.

$ 48  Contact Us  

Otari MX 5050 Bii counter window

Audio Proz Inv #: 51229

excellent condition.

$ 14  Contact Us  

Otari MX 5050 Bii counter reset button

Audio Proz Inv #: 51226

excellent condition.

$ 24  Contact Us  

Otari MX 5050

Audio Proz Inv #: 61858

back panel without transformer, channel 1+2 XLR line outputs, channel 1 XLR line input, channel 1 XLR mic input, minor scratches but overall good condition, #8+

$ 28  Contact Us  

Otari MX 5050

Audio Proz Inv #: 62207

Side panel screw kit, complete, 8 screws (Hex head), 8 plastic washers, 8 rubber grommets (1 grommet cracked + broken), used good condition, #9

$ 22  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.


Otari MR1L motor

Audio Proz Inv #: 56685

MX-5050 series unit. SN: 06276. With metal mounting plate. Like new, #9 condition.

$ 140  Contact Us  

Otari Motor MR1C012

Audio Proz Inv #: 56212

With brake, motor, cap, frame solenoid. Take up position right side.

$ 48  Contact Us