Acurus DIA-100 and DIA-150 can drive almost anything out there including Magneplanars,Electostatics,and very stable down to 2 ohms.Built like a tank construction both inside and out.Should last a lifetime.Google the reviews and see what I mean.With a quality tube buffer like a Musical Fidelity X-10v3 all traces of clinical sounding treble is gone and Bingo! Musical Nirvana and muscular balls just keep on going!They will never build them like this again.Class A sound at a budget price!