Agree with Catama about trying some tube rolling. I also use the Genelex Gold Lion reissues and they made a marked difference to the sound - bottom end tightened up, more forward in the mids and overall a more balanced sound. Also tried NOS Sylvania 6SL7GT/VT229 and some NOS Amperex 6SN7's. The Amperex also made a big difference - more so than the 6SN7's.
Having said all of the above, if there is a power mis-match with your speakers, look at the more powerful Cayin (A100-T) or perhaps the Rogue amplifiers.
Having said all of the above, if there is a power mis-match with your speakers, look at the more powerful Cayin (A100-T) or perhaps the Rogue amplifiers.