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OTL, Output Transformerless Amplifier User Group.

Now I am wondering if you know how our circuits actually work.

Did you know that the input stage of both our amps and preamps is a differential cascode with CCS? The top portion of the circuit is arranged as a CCS.

In the preamp, what this does is give us low enough noise and enough gain that even with passive EQ, only two stages of gain are needed for the phono section.


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