I've built kit amps and preamp, owned probably twenty different tube amps and probably even more tube preamps, and I have rolled many different tubes each with many manufacturers. Were I you, I would find out what tubes you have in there and go to audioasylum "tubes." and inquire about the best.
There are new tubes to be had, but in my experience those around the time of WW II were the best, but are almost unobtainable anymore. Forget trying to find Western Electric tubes unless you are very rich and in Japan.
Have fun!
There are new tubes to be had, but in my experience those around the time of WW II were the best, but are almost unobtainable anymore. Forget trying to find Western Electric tubes unless you are very rich and in Japan.
Have fun!