Power amp for Audio Research SP16L pre-amp

I would also consider the ARC 150.2 or the 100.2. Both have more than enough power for your application. I'm using a 150.2 with my SP16 currently and am very pleased. It runs cool, is so reliable and sounds great. I had a 100.2 which had a bit more texture and body in the midrange and slightly more natural highs. It is widely regarded as one of the best ss amps ARC ever built. It will cost you though--they come on the A'gon infrequently and sell quickly at asking price. For $500 less you can get a 150.2 that will last forever and sounds nearly as good.

Stutz:

Your "diversion" is less so than most and therefore I think warrants a reply. Basically, I sold my 100.2 because my equipment is stored in a cabinet with little room for ventilation. You can see my setup by clicking on "system". The 150.2 is a digital switching amp and therefore develops very little heat (and also uses very little energy--call it "green" hifi. I really feel you give up very little sonically between the two amps. Is the 100.2 better? Yes. Is the 150.2 very close? Yep. If you have the room to breath and can afford the 100.2 that would be my recommendation. Otherwise, the 150.2 will match up very well with your preamp. Hope this helps.