Hey Brian, I have a couple of CBS-Hytron 5814A black plate tubes coming to use in the 12au7’s sockets of the Trumpet (looks like they might arrive tomorrow). Ever heard these tubes? I think these are from the 50’s with red lettering. I was casually reading about them and became interested to see how different they may be vs the NOS Brimar’s I’m currently using.
Not too expensive at all, so worth ‘playing around’ and trying something different.
