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Grace Design M903 vs. Benchmark DAC1 HDR?

post #1 of 3
3/16/11 at 7:24am
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Has anyone compared the two units?  Which is a better headphones amp?

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post #2 of 3
10/21/11 at 10:01pm

Way late on this one, but the DAC1 has better gain stage selectibility and a higher damping factor. Most people can't tell them apart, but occasionally there are nags about uneven frequency response from the Grace. I haven't gotten to the bottom of that. Also, the Benchmark runs native current from the DAC stage through the differential op-amps... all in current mode for the fastest transient response with the least distortion. Their THD+N is insanely low and it runs cooler than the Grace.

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post #3 of 3
10/22/11 at 7:22am

I have a M902 and a DAC1. 

 

I prefer the DAC in the Grace and the DAC1 as headphone amp, but they are both very good at each.

 

I do most of my recreational listening via a Woo WA5.

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Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Grace Design M903 vs. Benchmark DAC1 HDR?