@Jtimothya,
Of course ARC wouldn't recomend the use of Vintage Valves in their equipment, they don't retail them !
I am rather surprised at your findings with regard to GE6550!!! Which I have never yet found applicable to the several GE's that I have rolled as the regulator in a Ref5se, and for my part leave the stock Sovtek sounding a tad etched and sterile in comparison.That said I have no experience of the same comparison in a Phono 2.
Are you certain that you tried an 100%, or close to, emissions example?
Of course ARC wouldn't recomend the use of Vintage Valves in their equipment, they don't retail them !
I am rather surprised at your findings with regard to GE6550!!! Which I have never yet found applicable to the several GE's that I have rolled as the regulator in a Ref5se, and for my part leave the stock Sovtek sounding a tad etched and sterile in comparison.That said I have no experience of the same comparison in a Phono 2.
Are you certain that you tried an 100%, or close to, emissions example?