Like Tpreaves said it's really up to you and your equipment. I use GL Kt-88 and winged "C" 6550. I rotate speakers and switch the tubes based on speakers. The 6550's have a little more punch on the bottom end and are a little fuller up high. Having said that it's based on my equipment, room, wire and ears.
Better sound from 6550 or kt88 tubes in Jadis amp?
I have only used kt88 tubes in my amps but they also accept 6550 tubes.
Can anyone tell me if there is any improvement going to 6550 tubes ?
Can anyone tell me if there is any improvement going to 6550 tubes ?