I need to replace a transistor in my guitar amplifier. The model number listed on the original schematic is 2N2148. It is in a TO3 package and the rest of the specs are listed here.
I am having trouble trying to find a suitable modern replacement and I am unsure whether I should buy a NOS given that it is a germanium component. I found a few on Ebay here and here but I could really use some advice as to what to do in this situation.