Hi,
NOS Mullards have a stellar reputation, don’t think you could go wrong with it provided they’re in good condition. Based on what you described NOS Mullards and NOS Tungsol’s would fit the bill.
I change my preamp tubes from time to time between NOS and new prods and sometimes a combination of both just to experiment. Tube rolling can make one go crazy!
NOS Mullards have a stellar reputation, don’t think you could go wrong with it provided they’re in good condition. Based on what you described NOS Mullards and NOS Tungsol’s would fit the bill.
I change my preamp tubes from time to time between NOS and new prods and sometimes a combination of both just to experiment. Tube rolling can make one go crazy!