6BQ5 spud amp: Initial review

This is a build series on what's called a "spud" amp. It's using a 6BQ5 EL84 output tube only, with a 6CA4 rectifier. It's wired as a SE pentode with a unique local negative feedback loop and probably is going to require a preamp to reach full power.

It should be a great beginner amp to build and my goal in building it is to use it for a pre-amp shootout!

I plan to get a BOM and such on my website this week.