As a side note , yes I put a 100 uF cap directly behind an EZ-81 , with no consequence. I also run a dual rectifier since total load on this chassis from both output tubes is 4 6v6 running in parallel.
A warm welcome to tube amp modding fans and those interested in hi-fi audio! Readers of Kevin O'Connor'sThe Ultimate Tone (TUT) book series form a part of our population. Kevin O'Connor is the creator of the popular Power Scaling methodology for amplifiers.
Please remember these three principles: respect, sharing, community.