Tube Amp Archive

+1
The 47k is a grid stopper, the grid leak resistor is the 1M at the input jack.
The main purpose of the gs is to prevent noise (rf) and i would use two of them, right at the grid of each preamp tube....

TUBEDUDE wrote: ↑Fri May 31, 2019 4:49 pm I do it and have found good.noise reduction.

So do I, (almost) always. I use transformers with another 5 (not used rectifier tube) or 12V winding for the relay stuff, which works fine without hassle....