Single ended triodes are quite popular these days among certain audiophiles. However, the only SET amp I've heard that sounded good to my ears is the Wyetech Labs Topaz which puts out about 18 watts, plenty for speakers of 88 db sensitivity unless you're a headbanger (in which case SET isn't for you anyway). The Cary's and all the others I've heard do too many horrible things to the frequency extremes to satisfy me, although the midrange is wonderful. I currently use a SE pentode amp at 25 wpc, even though my 103 db sensitive speakers could do with less power. These amps, the MaxLine Trimax monoblocks, don't roll off the highs nor make the bass mushy. But generally speaking and assuming amps with the same architecture, lower powered amps sound better than higher powered ones. Check out the VAC 30/30 as opposed to the 70/70. With appropriate speakers, the 30/30 sound cleaner and more musical. It's just that most folks need the higher power.
Approach SET's with caution. My best advice is a lot like the above posters. Buy the speakers you like first and then see if SET will work. Then try a low powered amp and see what you think.
Approach SET's with caution. My best advice is a lot like the above posters. Buy the speakers you like first and then see if SET will work. Then try a low powered amp and see what you think.