Antonkk 01-25-10Audio Research also makes quality solid state amps. My brother uses an ARC 100.2 with his 3A Sigs and loves the results. Rated conservatively at 100 WPC into 8 ohms, the 100.2 produces 200 WPC into 4 ohms and a hefty 360 WPC into 2 ohms
I know that Audio Research is the ideal amp for them but I would prefer solid state pre-power amp combo and of course preamp must have the HT bypass.
Here's one that someone had for sale on Audiogon just a few days ago that didn't sell