From Russia with Valves

A project log for The Muffsy BSTRD - Class A Valve Preamp

An open source Class-A valve preamplifier and regulated PSU, complete with Eagle project files and detailed Bill of Materials

skrodahlskrodahl 11/03/2016 at 08:350 Comments

These puppies just showed up, all the way from Smolensk in Russia. They are 6S2S (C is the Cyrillic letter for S), which is one of the models that are compatible with 6J5. Others that will also work with the BSTRD are L63, VT-94 and 38565J.