The claim for low distortion seems to lack substance. Indeed the push-pull arrangement does somewhat reduce 2nd-order distortion, but not more than any other push-pull arrangement, as found in many reputed compressors, such as Gates StaLevel, CBS Audimax, Collins 26, UA176, any Western Electric limiter, and indeed the famous fairchild 660/670.mjrippe said:Has anyone else read this article from 1997? I found it in my archives. It appears to be a hi-fi/audiophile magazine but he lays out a vari-mu circuit with a twist.
Like it is very often with these articles. Nobody double-checks the content.gyraf said:Agree, I always suspected it to be some kind of a simulation exercise.
In order to make it acceptable, it would be necessary to add balance controls.Very dependent on ECC189 tube selection, no trim for CV break-through
As you know, HiFi is a different world, 100mV 100kohms...Output is post passive attenuator, 100K Ohms from a ECC88 cathode.
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