Yes I did. Mostly in the treble. It's much sharper and has much more energy. The difference in sound resembles using Adobe Audition's mastering effect called "Energizer - Mild". 

I got my new MOSFETS today just got them soldered in to the PS board (insulated from the heatsink this time). That fixed it!    With the amp boards connected and running, I have no trouble adjusting the B+ voltage to 250.0V   Thank you both for your help! I couldn't have fixed it without...

Quote: Awesome! Thanks for the info funch, that saved me a lot of time scouring catalogs XD I just ordered a 167Q6 from angelainstruments.   I must say though, the Bijou sounded pretty damn good even with a screwed up B+ voltage and an over worked transformer (although I don't dare...

Wow, that's probably it. Excellent job finding that thread balderon, thanks very much!   I'll replace the MOSFETs and let you know if that works. =) 

Quote: Yeah my 270DAX is getting SERIOUSLY warm. Like 50-60°C. I think I'll follow your lead =)

Well, I tried a 100k ohm resistor across the B+ and ground and I'm reading a stable 250V. But the second I connect one of the amp boards the voltage starts to drop. It takes a few seconds to go from 250v to 138v, I assume due to the caps slowly discharging. Interestingly, with one board, it only...

So I ordered the kit for the Bijou from glassjar audio and the build went smoothly. The amp is working, but after probing around with the multimeter I'm curious about something...   With the Amplifier boards disconnected from the power supply, the b+ voltage reads exactly 250.0V, however...