Bit the Dust
Dropped a matched pair of these in brand new Vox AC10C1. Immediate improvement in sound quality..Really Nice....But, this new Vox amp may be the beast that gets the best of these tubes. After ~6 weeks of playing 60 mins a night it developed a Chime\Ring on the Low A & E open string and on E + A Pwr chords if I pushed em at all. ((Became more prevalent this last week so I dropped stock tubes back in and cranked it up..rattled the windows for about an hour then pulled it back and played another 30 mins specifically trying to recreate hum - not a hint to be heard.)) Got a pair of the TAD EL84 STR due to arrive tomorrow so fingers crossed this tube can "stand the heat" - Love the fast\prompt shipping TheTubeStore provides!!