The amp is built around simple concept: to make it “as well made as sanely possible”. Without Gucci crazy stuff but otherwise - without compromise. So the power tube is the best I know of (except the insanely unavailable original WE211) The power supply has oversized transformer, one separate transformer for every task - one for 211, one for small tubes and one for all heaters. The small tubes have choke supply, and separate PSU for every half of the two triodes. The schematics is the best I know of - based on the experience with tens of 845 amps I rebuilt and the GM-70 sister amp that we sell. The big tube has silicon rectified PSU. The small tubes - have very good tube rectifier. 211 has its own huge choke as well. Signal "path" wiring is super short - 4 inches in total. All parts are very good, over-specified, used well under their limits and so on. Bias is adjustable by user. And whats most important - the output transformer and power transformer are of first class - the famous OGONOWSKI type. I decided to use very well tried schematics - 80 % is my Lampizator DAC scheme plus the power tube circuit .