@orpheus- very good about the oringinal 12ax7 , i rolled them with mullared reisuues and it was not a good thing , i switched back asap. Do you have any advise for the pre amp stage of 12 au 7.I currently am using the tubes originally for the spirit amp 3 and somehow they didnt improce much they are NOS philips which are probably RCA greyplates.
Mullard NOS 1950 are incredible but expensive , i changed them with ayon oringinals and i was sent to musical heaven!
Mullard NOS 1950 are incredible but expensive , i changed them with ayon oringinals and i was sent to musical heaven!