[MonkeyMan]

Does anyone here have experience with this tube as a 12AU7 substitute?

GB-5963 Sylvania Gold Brand "Gold Pins" NOS

How do you think it'd perform in the RSA Raptor?

 

[sacd lover]

Quote:

Originally Posted by MonkeyMan Does anyone here have experience with this tube as a 12AU7 substitute? GB-5963 Sylvania Gold Brand "Gold Pins" NOS How do you think it'd perform in the RSA Raptor?

5963's have a lower max on the plate of 250 volts. You should probably ask the manufactuer about compatability.