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In Reply to: RE: Best Quiet Pre-amp 6SN7 New Production Tubes ................ posted by Cut-Throat on September 06, 2020 at 11:43:02
try 6SU7GT tubes, they are supposed to be quieter. Although based on my tests, they also show noise around -86 dB, which is the same as for example as a regular Sylvania 6SN7. New production, showed even worst performance with Full Music at -84 dB and microphonic, but EH Gold did as well as 6SU7, at -86 dB. 5962 didn't help with that either, measuring at -86 dB. Since 6SN7 is a low-gain tube, noise is not a major issue (if the tube is strong, the weaker the tube, the more noise), but microphonics are due to a large plate structure.
6SU7GT .... Isn't that a 6SL7 Equivalent Tube? -- I'm looking for 6SN7 tubes.
You are absolutely correct.
So, you're suggesting that I stick a 6SL7 tube in place of a 6SN7?
No, no. As in the previous reply, 6su7 shouldn't be used in place of 6sn7.
OK, I'm just trying to figure out why the 6SU7GT was mentioned in this thread about 6SN7 tubes ???
Simple explanation, brain fart. The older I get the more it farts.
And a GOOD one.
Especially the Tung Sol round plated versions.
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