03-17-09: Bob_reynolds
Tvad, aren't you talking about amps with high output impedance? The Bryston's output impedance is low enough relative to a speaker's impedance to not be an issue.
That's a good question.
I have 8 ohm nominal speakers with minimum impedance of about 4 ohms. I know my speakers display significantly more balanced music reproduction with amps that double power as impedance is halved (Pass XA-60.5, Belles 150A Reference, Belles 350A Reference, Bel Canto Ref1000) versus amps that do not (NuForce Ref9SE V2, VAC Musicbloc 160, Atma-Sphere M-60).