I drove my SC 3's for five years with a Bryston 4B-ST and it sounded great (phenomenal bass and peak loudness). Now I have a VAC Ren. 70/70 Mark III on the SC 3's. Sounds nearly perfect. I run the VAC with no feedback on the 2-4 ohm taps. One person above said "brightness" with VAC and SC 3. I ask "which VAC?" My room is not acoustically dead (in fact, perhaps too alive) and I have no problem with brightness. My ears, my spouse's ears, and my friends ears are stunned by this combo. Good luck.
