2. amps-preamps
  3. 189018-150037

12AX7A preamp tubes - ribbed vs smooth plate

So I'm gonna buy some preamp tubes for an amplifier and now I see I have to choose between ribbed and smooth plate (nos telefunken Germany from the 60s).

Anyone have thoughts on which way I should go when I have speakers that are detailed.  

 

emergingsoul

Showing 2 responses by tablejockey

tablejockey
3,790 posts
 

"4 12AT7 tubes. no clue what they do Beyond rectify"

Your amp is SS rectified, not tubed.

2nd gain stage/phase splitter? Just guessing.

tablejockey
3,790 posts
 

"It's a mono block amplifier with 8 KT 88 and 6 small tubes (  4 rectifier, 2 preamp)"

Huh?

That's a most unusual topology.

What brand is this? Dual rectifiers for each channel?]]

 

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