Had a chassis and parts - got bored so I wanted to try a Tube recetified Zen-And have a preference for 5AR4 tubes- with a low part count it makes for a quick build- Dead quiet- Sounds great! Not sure how the Decware is running the 2 milliamp meters full time - but don't like the idea of being on all the time and in the circuit - I have a simple volt meter wired with a center off and can check either output tube - getting almost 10vdc off of each cathode resistor-resistor is 300ohms so 10v puts me at 33ma so Iam biased at 93%. Just what I needed yet another amp!!!