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OTL, Output Transformerless Amplifier User Group.

I think we could agree to say...

that the Berning amp uses a "Impedance Converter" (as described in Hansens article that you linked to) to couple the "output" tubes (or the output of the amp if you will) to the speaker/load. Also, I think we can agree that . . . while the output tubes of the Berning amplifer are coupled to the speaker through a Impedance Convertor, "traditional" OTLs designs use no such device and the output tubes are directly or capacitively coupled to the speaker.

Hmmm now maybe I should tell Jud to call his amps "direct output coupled OTLs" instead of just "OTLs"... :-) :-) :-)


Happy Listening,
Rich Brkich
Retailer & Audio Asylum Industry Liaison


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