Hi there couple years ago I made my self a V72 mic pre, my knowledge is very patchy I just soldered this thing together point to point, got trans plus choke from Sowter and with some tweaks it worked great, but now it makes white noise sound and crackles still passes audio, I thought it could be tube bases needed cleaning but no, swapped all capacitors still no havent got any other tubes to sub sadly, it runs off power supply that I use on my other home creations and they are all ok, anyone have any ideas remember im not that technical.
Thanks Gary O.
Thanks Gary O.