I bought this mint condition Leben CS300 here on Audiogon a while back, and I've been VERY impressed with it. But I really need more watts, so this must go. I am including 3 sets of EL84's, Sovtek, Genalex Gold Lion, and JJ. These are the three sets with came with the amp to me, and I have only ever used the Genalex. They sound fantastic and I saw no reason to experiment. The amp is flawless in operation and appearance. Truly stunning to look at. You will not be disappointed in this!