Greetings repository of aggregate information. I've decided to replace all the valves in my Manley Labs 300B preamplifier. I just ordered a pair of Sophia Carbon Princess 300B and a pair of Sophia 6SL7. My Manley also uses a pair of rarer found OD3 and 5AR4 valves. I don't know much about them and searching the web doesn't help me gain much insight on which ones to get.
I'd love some info about which types to buy and where to buy them from. I'm from Australia so international shipping is a must.
Cheers.
