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I have read that the KT77 is a direct replacement for the E34L.
1. Is this correct?
2. Can any damage come to my amp substituting the KT77 for the
I own a Golden Tube SE100. The amp uses 10 E34L tubes.
This is the response I got from Conrad Johnson a few years ago when I checke with them about the same thing;
The CAV50 is not designed for 6550, KT88, KT66 and KT77 tubes.
I highly recommend you to use EL34 tubes in CAV50. Again, this amplifier is designed for EL34 tubes, not for 6550, KT88, KT66 and KT77 tubes. Sovtek EL34EH is my favorite.
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