Nobsound 300b Monoblocks - HELP NEEDED!
A pair of these monoblocks landed in the listening room. They each have three valves to each monobloc. 300b x1 6H8C ×1 Soviet Union 5U4C ×1. Now the problems start. Douk audio in their wisdom left no markings for the position of the 6H8C or the 5U4C, so I could very easily plug them in the wrong way around. There are no markings on the amp. To add insult to injury my allen keys are worn down and useless and I don't have the right drill bit to have a look at the PCB. You couldn't make it up! :lol:. So my question dear AOSer's, do any of you own a pair or know the correct position of the 6H8C or 5U4C valves? The 300b just sits in the middle, that's the easy bit. So, basically, HELP!