This amp was my attempt to capture a bit of Hiwatt goodness in a foot pedal. I used a box and transformers meant to build a clone of the Matchless "Hot Box," which uses two 12AX7 tubes.
Always experimenting, I used a cascode input stage on this project, a Hiwatt tone stack, and an elevated heater power supply (partially to avoid stress on the "upstairs" triode of the cascode.
This sounds very Hiwatt-ish, but is a bit too bright for my tastes. One of these years I'll open 'er up again and play around with the values some more.
(c) Mark Huss 2010