Audio Proz Service and Sales


UTC DOT-1 interstage transformer

Audio Proz Inv #: 48058

25:1 imp ratio. Transformer coupler, for mic or guitar. New in box.

$ 16  Contact Us  

Halldorson TR-9

Audio Proz Inv #: 48059

Interstage transformer for audio coupling at guitar or mic level. New in box.

$ 16  Contact Us  

Halldorson TR-27

Audio Proz Inv #: 48061

New stock.

$ 8  Contact Us  

Halldorson TR-54

Audio Proz Inv #: 48062

Tiny size transformer for micro mic or guitar transformer coupling. New.

$ 14  Contact Us  

Essex Wire Corp C-280-A

Audio Proz Inv #: 48063

Class 1A transformer, in shielded metal can, 1.5" square. 250-4000 to 600 input, or output line balancing transformer. +24dB. Very good #8 condition, pair available.

$ 32  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.


Raytheon UX-7350

Audio Proz Inv #: 48066

Very good #8 condition.

$ 8  Contact Us  

Ampex #4580200-12

Audio Proz Inv #: 48067

Matching input transformer. Very good #8 condition.

$ 26  Contact Us  

Raytheon 292-11020G1

Audio Proz Inv #: 48068

150/600 ohms, +8dB max level, balanced line transformer in sealed shielded can. Excellent condition.

$ 30  Contact Us  

Allied Control Co. MH-18D relay

Audio Proz Inv #: 48069

26.5vDC, 240 ohms. New.

$ 18  Contact Us  

Audio Frequency Transformer 9072882 77-44

Audio Proz Inv #: 48070

6 watts, 60 cycles. Terminals 1-2 5k ohms; terminals 3-4 1.6k ohms. Can be used as line drive output transformer, +24dBm. Excellent condition.

$ 34  Contact Us  

UTC P-1245 B-6299-1

Audio Proz Inv #: 48071

Excellent condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.


FYI, Around the database you will often see us describe the condition of units on a scale of 1-10. #10 would mean the product is new from one of our suppliers, such as Behringer, Audio Technica, etc. #9 means the product is in perfect condition but is used, #8 implies there are some minor cosmetic scratches but unit is mechanically perfect, and so on and so forth.


Thordarson 24s75

Audio Proz Inv #: 48072

Audio output transformer, can be used as +14 to +24dBm balanced line drive transformer. Primary 500 ohm, secondary 3.2 or 6.8 ohms. 5watts. New in box.

$ 24  Contact Us  

Uni-Sync #7512-10k

Audio Proz Inv #: 48129

Input balancing transformer. Very good #8 condition.

$ 12  Contact Us  

Jensen JE-123-SL 835

Audio Proz Inv #: 48138

Audio transformer for DBX or Behringer output. +24dBm. Very good #8 condition. Pair available. $66 each (call us at 617-926-8020 for best pricing)

$ 66  Contact Us  

UTC AR-535

Audio Proz Inv #: 48140

Input transformer, 1 to 1.58 ratio, multitap. AR-535, C6748. Very good #8 condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

UTC LMI 50 KR47

Audio Proz Inv #: 48141

Filter transformer. Excellent #9 condition.

$ 20  Contact Us  

Apex 460 transformer XFM0013

Audio Proz Inv #: 49527

Power transformer for use in Apex 460 supply. New.

$ 24  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.


Apex 460 transformer XFM0013

Audio Proz Inv #: 49529

New.

$ 24  Contact Us  

Adjust-A-Volt variable transformer T51u

Audio Proz Inv #: 49631

120v-6A, 50-60Hz, open frame transformer variac, 4.5" square metal mounting plate. Excellent condition.

$ 40  Contact Us  

United Transformer Y-6431

Audio Proz Inv #: 49763

Output matching or inter-stage transformer, no specs available. Very good #8 condition with some minor paint scratches on unit.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

United Transformer S-55

Audio Proz Inv #: 49764

for tube filament supply. 6.3v CT, 3amp. Used in very good condition.

$ 16  Contact Us  

Teac TR-207 transformer

Audio Proz Inv #: 50089

with wires and mounting plate, excellent condition.

$ 24  Contact Us  

UTC 0-17 C6718

Audio Proz Inv #: 51610

Excellent mic input transformer. 500 ohm to 50k ohm, +8dBm. Excellent condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.


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.


Audio Speaker Autoformer

Audio Proz Inv #: 55172

Step up, down. High build quality, but unknown brand. Impedance match transformer, 28 ohm to 4 ohm. 30 watt capable. Used to allow loading of extra satellite speakers to be added to any stereo amp. Call for more details. Condition: 9

$ 16  Contact Us  

UTC A-39

Audio Proz Inv #: 55813

600 ohm primary, 2K ohm secondary. Max level +/-10dBM. From Scully type 280. Excellent condition, lettering intact, #9

$ 30  Contact Us