I do not own the VTSP but I do own the Herron VTPH-2A pre and experimented with some pricey NOS tubes. Quickly came to the realization I much prefer the new production vacuum tubes Keith provides. With that said, my favorite 6922 is the amperex 7308 and I'd bet it will sound damn good. You might save yourself some coin by going with Keith's recommendation?
NOS tube alternatives for Herron VTSP 3A r02
Looking for advice from actual Herron preamp owners who have experimented with different tubes. Recently acquired Herron VTSP 3A r02 to be used with CAT JL5 amp. Speakers are Dynaudio C4s & ATC SCM19v2s.
I´m fully aware that manufacturer advises against tube rolling citing preamp was voiced with especially screened & selected modern tubes but I´ve decided to disregard for the following reasons:
Unit was purchased used & came with new tubes that are not originally from Herron & IM(not so humble)O & experience current production Russian and Chinese are vastly inferior in tone & timbre to NOS Telefunkens, Siemens and Amperex in relation to 6922 variants.
Thanks
I´m fully aware that manufacturer advises against tube rolling citing preamp was voiced with especially screened & selected modern tubes but I´ve decided to disregard for the following reasons:
Unit was purchased used & came with new tubes that are not originally from Herron & IM(not so humble)O & experience current production Russian and Chinese are vastly inferior in tone & timbre to NOS Telefunkens, Siemens and Amperex in relation to 6922 variants.
Thanks