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I use kt120 in SEP mode w/fixed bias

It sounds very good to me. I tried under the same plate voltages kt120, kt90 and kt88. I simply adjust the fixed bias to obtain 120ma or 100ma or 75ma with each respective power tube. The sound is excellent with each but the kt88 has a little more refinement, which what is what you would expect with the smaller plate structure. But you can really notice the power from the kt120. I could use kt150 by going to SSR which would bump out the B+ an extra 5% but I am not willing to risk my caps with the unfettered voltage surge.

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  • I use kt120 in SEP mode w/fixed bias - DAK 20:43:55 03/21/17 (0)


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