Home Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

RE: tube taster

"The switch arrangement satisfies most of your requirements except for volume. "

That's not a minor point Ray. Failure to level the outputs prior to switching between them invalidates the experiment. I was involved in extensive double-blind A/B tests of SS amplifiers in the '70s and '80s. Higher-gain amplifiers must be padded down to eliminate this difference. Results become virtually nonsensical otherwise, with multiple listeners more frequently reaching different conclusions. That aside, I do think use of phones for these types of tests is more appropriate than speakers, particularly when vacuum tube power amps are involved. It's too easy otherwise to be fooled by variations caused by the tube/speaker interface.

Buy Chinese. Bury freedom.

This post is made possible by the generous support of people like you and our sponsors:
  Parts Connexion  

Follow Ups Full Thread
Follow Ups
  • RE: tube taster - Triode_Kingdom 09:14:47 07/09/17 (0)


Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.