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 1 response by daveyf

I have tried Smooth plate and Ribbed plate Tele's in my CAT preamp, much prefer the Smooth plates. The Ribbed plates are a little brighter and tend to be less resolving. Perhaps in a different position, or component, this might not be the case??