In Reply to: Help choosing a quad of 6SN7 tubes posted by scruffy_ on January 11, 2017 at 14:44:12:
Whan an amp or preamp doesn't sound right, the first thing I do is measure frequency response and distortion. It's a shot in the dark changing anything until that's done, and measurements are a lot cheaper than a quad of NOS 6SN7s.
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Follow Ups
- How Do You Know It's the Tubes? - Triode_Kingdom 08:37:50 01/12/17 (4)
- It's not the tubes! - scruffy_ 10:37:49 01/13/17 (3)
- RE: It's not the tubes! - fred76 22:29:37 01/13/17 (0)
- RE: It's not the tubes! - sony6060 12:41:27 01/13/17 (1)
- is it OK to mix the tubes? - scruffy_ 23:33:43 01/13/17 (0)