I finally turned this thing on and after burning down the rectifier tube, with a replacement it works and to my amusement really well, no hum whatsoever, the sound definitely special, I can't say much else as it's my first experience with tube amp. The numbers are a bit higher than stated in the schematics: the heaters of 6SN7 are 6.7VAC, the LED to pin 3.3V, the 3-5 pins 101V and the B+ 445v as the Anode 435V, generally all readings are higher apart of heaters for 300B which are perfectly 5V. When I first checked this with the current limiting bulb and variac it all was much lower than in the schematics even with 230VAC, yet my first readings without the limiting bulb were even higher, than those given here, but I managed to lower it by chenging the PS primary from 230V to 240V(I live in UK, but in my house it's 245VAC!) I will try to deal with this sometime later if I get any idea how to do that, anyway I'm surprised how good (for now) it all works together with Ear834 and JBLs4410A and how loud it is. Thank you once again for all the great videos and sharing your knowledge and experience, without that this build would never happen.