Audiogon Discussion Forum
Apr 28, 2006 · I have owned three of the preamps your looking at. The Nak C-5A, Adcom GFP-555II, and the Yamaha CX-600 and CX-630. Dang I can't believe I've owned all of those myself. In order of preference, I think the Nak is far above all the rest in sound and build quality. Next was the Yamaha CX-600, it had better quality components than the newer CX-630.
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