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- Jun 5, 2003
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I think comments made saying the Pro 900's don't need an amp mean that they can technically be run at respectable volumes, and enjoyed, straight out of most DAP's.... But, I do agree with you that they benefit hugely from a quality amp. I remember getting them, thinking how excellent they were straight out of my Sony X on first listen, but as I experimented with a few amps, the sound quality gained was immediately noticeable. And now when going back to DAP only, the sound is more congested and flabby. It's rather amazing how much more refined they are with higher current exacting control over the titanium plated drivers.....