The Gold Lion is very decent. The mullard new production are Russian made reissues so the only common thing with the NOS ones is the name.
I agree with the above opinion though, great that you have extra tubes but first let the amp play and burn in a bit with the stock tubes also so that you tune your ears to a base sound. Then you have an idea of what more exotic tubes are improving on or not.
I agree with the above opinion though, great that you have extra tubes but first let the amp play and burn in a bit with the stock tubes also so that you tune your ears to a base sound. Then you have an idea of what more exotic tubes are improving on or not.