• J Series Audio Transformers

Triad is pleased to relaunch our J series of shielded audio impedance matching transformers. The parts are manufactured in our California facility, not far from Venice. CA where they were originaly produced, all in strict accordance to the original designs, materials and processes.

Vintage audio recording gear is very popular today, due in some part to the nature of digital recording and the desire to "warm" up the audio signal using vacuum tubes and transformers; as well as the history of the original recording equipment that was used to create, essentially, the American songbook of recorded popular music.  Triad transformers were a big part of some of the most important equipment that is still used today in every major recording studio, as well as new recreations of the same vintage circuits used in the booming home recording market.




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Item #

Item Name

Maximum Input Level

Primary Impedance

Secondary Impedance

DC Resistance (Primary)

DC Resistance (Secondary)

Overall Turn Ratio

N/A 32.7 Ohm Primary DC Resistance J Series Audio Transformer N/A 1 mW N/A 50 Ohm250 Ohm600 Ohm N/A 85000 Ohm N/A 32.7 Ohm N/A 3450 Ohm N/A 1:12
N/A 33.7 Ohm Primary DC Resistance J Series Audio Transformer N/A 1 mW N/A 150 Ohm600 Ohm N/A 60000 Ohm N/A 33.7 Ohm N/A 4040 Ohm N/A 1:10.16
N/A 53.4 Ohm Primary DC Resistance J Series Audio Transformer N/A 1 mW N/A 225 Ohm900 Ohm N/A 60000 Ohm N/A 53.4 Ohm N/A 4178 Ohm N/A 1:8.7
N/A 50 Ohm Primary DC Resistance J Series Audio Transformer N/A 10 mW N/A 50 Ohm250 Ohm600 Ohm N/A 60000 Ohm N/A 50 Ohm N/A 5000 Ohm N/A 1:10
N/A 50 Ohm Primary DC Resistance J Series Audio Transformer N/A 10 mW N/A 150 Ohm600 Ohm N/A 60000 Ohm N/A 50 Ohm N/A 4920 Ohm N/A 1:10
N/A 62 Ohm Primary DC Resistance J Series Audio Transformer N/A 1 mW N/A 50 Ohm110 Ohm200 Ohm300 Ohm600 Ohm N/A 150 Ohm600 Ohm N/A 62 Ohm N/A 70 Ohm N/A 1:1
N/A 50 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 125 Ohm500 Ohm N/A 500 Ohm2000 Ohm N/A 50 Ohm N/A 200 Ohm N/A 1:2
N/A 50 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 125 Ohm500 Ohm N/A 4 Ohm16 Ohm N/A 50 Ohm N/A 1.5 Ohm N/A 5.6:1
N/A 10 Ohm Primary DC Resistance J Series Audio Transformer N/A 500 mW N/A 25 Ohm100 Ohm N/A 10 Ohm40 Ohm N/A 10 Ohm N/A 4 Ohm N/A 1.58:1
N/A 50 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 125 Ohm500 Ohm N/A 25 Ohm100 Ohm N/A 50 Ohm N/A 10 Ohm N/A 2.24:1
N/A 302 Ohm Primary DC Resistance J Series Audio Transformer N/A 200 mW N/A 1000 Ohm N/A 50 Ohm200 Ohm N/A 302 Ohm N/A 138 Ohm N/A 2.2:1
N/A 1000 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 2500 Ohm10000 Ohm N/A 500 Ohm2000 Ohm N/A 1000 Ohm N/A 200 Ohm N/A 2.24:1
N/A 1540 Ohm Primary DC Resistance J Series Audio Transformer N/A 10 mW N/A 15000 Ohm N/A 115000 Ohm N/A 1540 Ohm N/A 4020 Ohm N/A 1:2.76
N/A 1392 Ohm Primary DC Resistance J Series Audio Transformer N/A 32 mW N/A 15000 Ohm N/A 80000 Ohm N/A 1392 Ohm N/A 8109 Ohm N/A 1:2.3
N/A 1020 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 15000 Ohm N/A 50 Ohm250 Ohm600 Ohm N/A 1020 Ohm N/A 46 Ohm N/A 5:1
N/A 47 Ohm Primary DC Resistance J Series Audio Transformer N/A 50 mW N/A 150 Ohm600 Ohm N/A 150 Ohm600 Ohm N/A 47 Ohm N/A 40 Ohm N/A 1.4:1:1
N/A 1630 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 15000 Ohm N/A 150 Ohm600 Ohm N/A 1630 Ohm N/A 73 Ohm N/A 5:1
N/A 1740 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 15000 Ohm N/A 50 Ohm250 Ohm600 Ohm N/A 1740 Ohm N/A 81.2 Ohm N/A 5:1
N/A 1723 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 15000 Ohm N/A 150 Ohm600 Ohm N/A 1723 Ohm N/A 81 Ohm N/A 5:1
N/A 2500 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 6250 Ohm25000 Ohm N/A 125 Ohm500 Ohm N/A 2500 Ohm N/A 50 Ohm N/A 7.1:1
N/A 112 Ohm Primary DC Resistance J Series Audio Transformer N/A 100 mW N/A 2000 Ohm N/A 150 Ohm600 Ohm N/A 112 Ohm N/A 48.5 Ohm N/A 1.82:1
N/A 40 Ohm Primary DC Resistance J Series Audio Transformer N/A 50 mW N/A 50 Ohm250 Ohm600 Ohm N/A 50 Ohm250 Ohm600 Ohm N/A 40 Ohm N/A 44 Ohm N/A 1:1
N/A 43.8 Ohm Primary DC Resistance J Series Audio Transformer N/A 50 mW N/A 150 Ohm600 Ohm N/A 150 Ohm600 Ohm N/A 43.8 Ohm N/A 44.1 Ohm N/A 1:1
N/A 470 Ohm Primary DC Resistance J Series Audio Transformer N/A N/A 16 Ohm N/A N/A 470 Ohm N/A N/A
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