12AX7A preamp tubes - ribbed vs smooth plate

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.

That is very sad new indeed I knew Bill had been ill what an audio legend may he RIP.