I'm driving a pair of Gallo Reference Strada's with the Wadia 151PowerDAC mini. The Gallo's are rated at a sensitivity of 87db and the Wadia has no problem driving them, but my room is only 10x11. The Wadia replaced a Bel Canto C5i. The Wadia plays just as loud as the BC. I guess you can tell that I like the Wadia more than the BC. My only complaint with it is that when you turn if off, the volume always resets to zero. According to Wadia, it was designed to be left on all the time.