I have the 1sc. I drive them with three different tube amps. The main amp is a pair of sound valves (Dyanco design) mono blocks M60's, which I purchased over ten years ago for about $1K. They often appear on e-bay for about $500. Sound great. I also have and use the intergrates Cayin 100 and Cayin 80 tube units. They also work well. The 80 can often be had for $1.2K. Cayin has great sound and are a real value. I don't think you can go wrong with any of these amps since if you don't like the sound they are easy to sell off.