Ordered a Willsenton R300

I’m also interested in hearing feedback on the R300. Interesting to see dual mono rectifiers at this price. My gut is not to trust a directly hearted triode without him puts - unless they are there but not described. Hard to fault an amp if it sounds good and costs less than a tube change. 

@zazouswing 

My gut is not to trust a directly hearted triode without him puts 

What do you mean?

Charles

I meant hum pots. Damn spell check  

“Hum balance pots are usually found with filament type tubes being operated off AC. AC on one pin is in opposite polarity of the other filament lead. The hum balance pot adjusts to a point where it cancels.  

Some used a center tapped resistor rather than pot. This works but not all tubes are exactly the same. The pot can adjust for differences”

Depends on how they are doing the DHT filaments.   I use regulated DC and they may well have DC filaments?

AC versus DC filament heating has been debated forever it seems. Some do argue that AC heating is more purist in approach (Require hum pots). However many/most of the highest regarded 300b amplifiers do choose to utilize DC heating (Do not require hum pots). As is typical for high end audio, there’s never 100% consensus on anything.

Charles