not your amp, but my Cayin A88T uses either 6550 or KT88. It can switch from Triode 22 wpc to ultralinear 45 wpc. I prefer ultralinear. It came with Gold Lion 6550’s, and I changed to JJ KT88 Blue Glass, matched quad. I prefer the KT88s. Later I had the bias adjusted for the KT88’s, no difference in sound. https://www.amazon.com/Vacuum-Tube-Electronics-Glass-Matched/dp/B00IA6LOD8 mine hardly look blue, not like the photo |
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I know it’s subjective and circuit dependent, but I really like the Tung Sol 6550s in triode in my Dyna/VTA monoblocks with an EH 12BH7a driver tube. It’s the Goldilocks combo for me. I’ve liked EH-EL34s, Siemens SL-34, GL KT66, and really liked the Tung Sol 7581A too, but those TS 6550 make me smile. The EH6550 didn’t do much for me. |
Have owned quite a few of the VTL monoblocks but not the S200. The EH6550s are nice, so are the EH KT88s. You may want to consider adding a 0.1uf film cap bypass to each of the main filter caps. Will remove a ton of the noise that gets modulated through on the B+ rail. Don't forget the 12AT7 input tubes and 12BH7s. Try to find RCA or Sylvania black plates to plug into those sockets. |
