The musical Design sp2b works well with the stratos. I have the stereo version with 100,000 cap upgrade and it sounds great. You could also call Klaus and try out his Tempest preamp which should be a perfect synergistic match. I was thinking of this also. I had already bought the 2b before I purchased the amp. Klaus said it was a great match and it really is. I always liked the idea of having something tubed in at least one of my components but I would still like to try the Tempest to see how it sounds. Good luck!
