Everyone is correct and its obvious they have all had vast experience in this hobby. If I were you I would upgrade my preamp first, you might look at some used CJ like PV10 in particular.
You get a real bang for your buck and you get very tubey sound but totally grain free and non-fatiguing. Just an option.
You get a real bang for your buck and you get very tubey sound but totally grain free and non-fatiguing. Just an option.