Adding a preamp to my 18 watt Stout Build

[taylorc315]

Is there a lay out for adding a preamp to the 18 watt stout design? I think that it is pretty straight forward, but would love some input.

Thanks

[sluckey]

http://el34world.com/Hoffman/files/Hoffman_Stout.pdf

[taylorc315]

This may be a dumb question, but here goes should my filter caps be draining on their own? I'm using the jj 40/20/20/20 cap. As soon as i shut the amp off the voltage drops right away. 300V down to 0 within seconds. What am i doing wrong😕

[sluckey]

I don't see a problem.