Audio Proz Service and Sales


Sescom TR-136A

Audio Proz Inv #: 45055

150/600/10k to 60k/10k. 9pin connector. New old stock.

$ 14  Contact Us  

Webster Electric T-511-1

Audio Proz Inv #: 47643

Telephone line transformer. 10k ohm to 200 ohm, -25dBm. 6-pin connector, shielded can. Excellent condition, two pieces available.

$ 14  Contact Us  

Halldorson TR-54

Audio Proz Inv #: 48062

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

$ 14  Contact Us  

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  


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.


United Transformer S-55

Audio Proz Inv #: 49764

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

$ 16  Contact Us  

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  

Allied Control Co. MH-18D relay

Audio Proz Inv #: 48069

26.5vDC, 240 ohms. New.

$ 18  Contact Us  

Talema ta60E

Audio Proz Inv #: 58775

Power transformer. 115/220 VAC. 9V taps on winding (2) available. 9/10 condition, mounted on board.

$ 18  Contact Us  

Talema ta60E

Audio Proz Inv #: 58774

Power transformer. 115V/220V, 18V taps on winding. (2) available. 9/10 on circuit board.

$ 18  Contact Us  

UTC LMI 50 KR47

Audio Proz Inv #: 48141

Filter transformer. Excellent #9 condition.

$ 20  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.


United Transformer Corp H-42A

Audio Proz Inv #: 47646

10k to 10k ohm, max level 2dB. Excellent choice for certain tube cathode coupling or direct box matching. Ten pieces available, excellent condition.

$ 22  Contact Us  

Mic Input Transformers

Audio Proz Inv #: 70177

ACEM 70500852 - High quality, superior shielded, 600 to 50k mic transformer, 1" diameter, 12 available ($22 each), 

ACEM 70500166 - 600 to 600 ohm line transformer, up to +14DBM use, similar to most standard fit, 1.5" square fit, (depending use probable fit some square shield around), 4 available ($22 each)

$ 22  Contact Us  

Beyer 80-000-007

Audio Proz Inv #: 71604

High quality 600 ohm input impedance to 50K output impedance, with electrostatic shield,  few available, New item, (priced each)

$ 22  Contact Us  

Halldorson 24s59

Audio Proz Inv #: 48056

Audio output transformer, 5watts, good for mini guitar amp projects or balanced line drive. Primary 25k ohms, secondary 3.5 ohms. New.

$ 24  Contact Us  

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  

Halldorson 22s75

Audio Proz Inv #: 48057

Output transformer, can also be used as unusual mic pre or +24dBm 600 line drive. Primary 7k ohm, secondary 50 ohm.

$ 24  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.


Apex 460 transformer XFM0013

Audio Proz Inv #: 49529

New.

$ 24  Contact Us  

Apex 460 transformer XFM0013

Audio Proz Inv #: 49527

Power transformer for use in Apex 460 supply. New.

$ 24  Contact Us  

Teac TR-207 transformer

Audio Proz Inv #: 50089

with wires and mounting plate, excellent condition.

$ 24  Contact Us  

Musashino TOA OT-333

Audio Proz Inv #: 55914

100 watt, 70 volt line transformer. Condition: 9

$ 24  Contact Us  

Ampex #4580200-12

Audio Proz Inv #: 48067

Matching input transformer. Very good #8 condition.

$ 26  Contact Us  

Otari 5050 transformer

Audio Proz Inv #: 44753

Old version Transformer #ET-11-186. Good #8 condition--leads are cut short but are still usable.

$ 30  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.


UTC CR-725

Audio Proz Inv #: 47525

Primary ohms 100; secondary ohms 600; max level +20dBm; frequency response 1/2dB 30-15Kc. Four pieces available.

$ 30  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