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Has anyone seen or used these lightweight, audiophile-sounding amps in their system? They look very interesting, and people on audiophile message boards are saying some pretty nice things about their sound quality.

[Michael 'Bink' Knowles]

BHFProfessional wrote on Mon, 18 April 2005 17:58

Has anyone seen or used these lightweight, audiophile-sounding amps in their system? They look very interesting, and people on audiophile message boards are saying some pretty nice things about their sound quality.

I tested the ZR1600 last year and it performed admirably alongside amps of similar rating. I didn't have the chance to test it under low AC supply conditions but it was able to deliver a fine, clean signal near rated power at 117vac.

I noticed that it tended to top out with the highest power avaible at 0.8% THD+N when tested at 1kHz. Some sort of safety limiting seems to be in place which pulls power output back down under higher THD levels. At 20Hz this wasn't seen -- it continued to put out higher power and higher distortion when presented with higher input. My 20kHz results were faulty due to heavy 30khz low-pass filtering in place which means my 20kHz power figures aren't telling the whole story.

I don't think you'll be dissatisfied, though you'll want to see how the amp performs under poor AC supply conditions before you buy a pallet-load.

-Bink