Audio Proz Service and Sales


Otari MX-70 Operation and Maintenance Manual

Audio Proz Inv #: 45497

Excellent condition.

$ 120  Contact Us  

Otari MX-5050 Mk III 8 manuals

Audio Proz Inv #: 45519

Original instruction and maintenance manuals. Very good condition. with schematics (shop copy)

$ 88  Contact Us  

Studer B67 Service Instructions

Audio Proz Inv #: 45511

Very good condition original.

$ 60  Contact Us  

Crown Service Manuals and Schematics Binder

Audio Proz Inv #: 52151

Big set of Service Manuals and schematics for Crown products. Includes full service manuals and schematics for: DL2 Stereo Controller, Straight Line One Preamp, Power Line One Amplifier, SA-2 self-analyzing amp, D75 power amp, P/SA-2/D/X, FM-1 tuner, RTA-2 real time analyzer. All in excellent condition. Sold individually or as full set. Call for individual pricing.  Condition #9

$ 60  Contact Us  

Otari MX-5050 Alignment Procedure Manual

Audio Proz Inv #: 45516

Original alignment procedure manual for Otari MX-5050 BII and MX-5050 MKIII-2. Very good condition.

$ 58  Contact Us  


If you are having trouble finding parts, enter the name into our search bar at the top of the page. 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 300 Series Operation Manual

Audio Proz Inv #: 45508

Excellent condition, original. Very rare manual!

$ 54  Contact Us  

Tascam 300 Series Operation Manual

Audio Proz Inv #: 45504

Perfect condition, original. Very rare manual!

$ 54  Contact Us  

Tascam 85-16B Operation Manual

Audio Proz Inv #: 45506

Very good condition original.

$ 54  Contact Us  

Otari MX5050 Bii user manual and schematics

Audio Proz Inv #: 45593

Excellent condition instruction manual with diagrams, parts lists, and schematics. Original manual.

$ 54  Contact Us  

Otari MX-5050 Instruction Manual

Audio Proz Inv #: 45518

Original instruction manual for two track Otari machine. Very good condition.

$ 48  Contact Us  

Tascam 48 Operation Manual

Audio Proz Inv #: 45509

Excellent condition, original.

$ 48  Contact Us  


We are presently operating on an APPOINTMENT ONLY basis. Please call us first at (617) 926-8020 to schedule an appointment before you come into the shop for repairs, rentals, product recommendations, consultations, or anything other than minor purchases.


Revox B77 MkII service manual and schematics

Audio Proz Inv #: 49765

Excellent condition.

$ 44  Contact Us  

Ferrograph series 75 "super seven" recorder maintenance manual

Audio Proz Inv #: 59953

Complete with full size fold out schematics. #8 condition

$ 44  Contact Us  

Studer 169/269 Operating and Service Instructions

Audio Proz Inv #: 45510

Excellent condition, but with notes on a few pages. Original.

$ 40  Contact Us  

Audi-Cord 100-Series operation/maintenance manuals

Audio Proz Inv #: 45599

Operation and maintenance instructions with schematics. Original manual, very good condition.

$ 40  Contact Us  

Tascam Teac 85-16 owner's manual

Audio Proz Inv #: 48772

Complete with schematics. Very good condition.

$ 38  Contact Us  

Tascam 388 Studio 8

Audio Proz Inv #: 59146

Operation/maintenance manual. Includes complete foldout schematics. 8/10 condition.

$ 38  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.


Soundcraft Series 1600 User Manual and Schematics

Audio Proz Inv #: 48041

Original, bound. Excellent condition.

$ 36  Contact Us  

Tangent AX Series schematics

Audio Proz Inv #: 45595

Component layouts, parts lists, schematics. Originals in folder, very good condition.

$ 36  Contact Us  

Audi-Cord Corporation

Audio Proz Inv #: 54919

A Series Recorder/Reproducer Service Manual. Minor wear cover. Condition #8+

$ 34  Contact Us  

Ferrograph Super 7 handbook and schematic

Audio Proz Inv #: 45601

Super Seven handbook with schematics and parts lists. Original manual, very good condition.

$ 34  Contact Us  

Revox Tape Recorder Model A77 Manual

Audio Proz Inv #: 71440

Glossy cover. Condition 8+.

$ 34  Contact Us  

TAC Scorpion Owner's Manual

Audio Proz Inv #: 55964

Has instructions, block diagrams, schematic. *Original* 8+/10 condition. Lightly yellowed edges.

$ 32  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.


Studer Revox B242

Audio Proz Inv #: 53891

Operation and service instruction manual for Studer Revox B242 2-channel power amplifier. 9+ Condition.

$ 32  Contact Us  

Otari MX-5050 manuals

Audio Proz Inv #: 45494

Instruction and Maintenance manuals. Similar use for B version. Very good condition. This is a copy that was supplied by Otari.

$ 32  Contact Us