I have Cary 300B SE monoblocks with WE 300B tubes. I have listened heavily for 3 years with great joy and without a problem. I have had no issues with tube longevity except to replace the 6SN7s x 4.
As, for the Cary sound, it is to die for in my humble opinion. Last night a dealer for Audiopax/Avantgarde was at the house listening to my system. He owns Quicksilver's as well. He repeatedly commented upon how clear and rich the SET sound was. I will not put down any other amps but I endorse the Cary products without reservation.
I also have a Cary SLP-98P, and my comments are ditto for that pre-amp as well.
Since I have high efficiency (103dB) horns, the Cary's are not overly worked. The key to tube longevity could also reflect the speaker - amp match.
As, for the Cary sound, it is to die for in my humble opinion. Last night a dealer for Audiopax/Avantgarde was at the house listening to my system. He owns Quicksilver's as well. He repeatedly commented upon how clear and rich the SET sound was. I will not put down any other amps but I endorse the Cary products without reservation.
I also have a Cary SLP-98P, and my comments are ditto for that pre-amp as well.
Since I have high efficiency (103dB) horns, the Cary's are not overly worked. The key to tube longevity could also reflect the speaker - amp match.