ptcl99

Responses from ptcl99

ARC Ref 3: Tung-Sol 6550 in power supply?
My ARC Ref 3 approached 2000 hours. I obtained a 6550 tube from ARC. Upon replacement, it was alarming to find that the Sovtek 6550 WE could not produce the ambience of the original SED Winged C 6550. The soundstage shrank notably and the new tube... 
Modern day equivalent of KEF 104.2s?
AudioengrI have been looking for a source to do a sensible mid-life (at least) upgrade of the venerable KEF 104/2. Could you please share the contact information / website as to where you obtained your upgrade and the extent of the upgrade? How di...