12AX7A preamp tubes - ribbed vs smooth plate

dinov

I don't think the answer (I'd need to ask my friend, we didn't make notes), and it would not be applicable to other phono/pre/amps in any case.

I would search for 'rectifier tubes' see what info comes up. perhaps ask Brent Jesse audiotubes dot com for advice.

If you find a good article about rectifier tubes, please let us know.

An amplifier modulates the power supplied. All things being equal, the better the supply, the better the sound. 

I thought rectifiers were rectifiers, nothing to do with the sound.

It was only a matter of time. Surprised it took this long. 

As I understand it, women seem to have a preference for the ribbed tubes. 😁

I too am shocked at the differences between rectifiers, including differences between direct-heated and indirect heated rectifiers. Fun to roll in my Woo headphone amplifier.

BTW, this is the first I am hearing of Bill Thalmann’s death. I met him in 1974 when he sold me my second pair of Advents while he was a salesman at the old Atlantis Sound in Falls Church, VA. The next year he very kindly helped me build an Ampzilla amplifier kit. I last spoke with him last fall as he was closing his shop. What a wonderful guy…it’s very sad news.