I've been listening to the Qinpu amp for about a week now, giving a lot of playing time to break in, including the burn-in track on Stereophile's Test CD 3. Associated equipment is a pair of Parts Express Overnight Sensations. (I submitted a lengthy review on the Overnight Sensation kit page if anyone is interested in an awesome sounding small set of speakers.) Source is IMac lossless music files and Cambridge Audio DacMagic 100 with asynchronous USB connection.
This is unquestionably a very nice amp. It had plenty of power to drive the relatively inefficient OS's and very good sound and wide stage. I would not, however, go quite as far as the superlatives used by the reviewers. I noticed a slight edge or grain to the vocals that can be a little fatiguing after extended listening. That is why I gave it a good long break in, hoping that the grain would smooth out and disappear. So far, there seems to be no change. Mind you, it's not like, "OMG this is raspy mid range." Not at all, and had I not been using another amp that, to me, had a more natural presentation, never gets fatiguing, and has all the qualities of wide sound stage, very accurate reproduction of all instruments and vocals, plus a little tighter bass than the Qinpu.
The amp I'm speaking of is the Audioengine N22 (22 w/ch) which I bought from Audio Advisor for $299. I did not do any checking to see if you guys have reviewed this amp. If not, it's worth an audition for sure.
This is unquestionably a very nice amp. It had plenty of power to drive the relatively inefficient OS's and very good sound and wide stage. I would not, however, go quite as far as the superlatives used by the reviewers. I noticed a slight edge or grain to the vocals that can be a little fatiguing after extended listening. That is why I gave it a good long break in, hoping that the grain would smooth out and disappear. So far, there seems to be no change. Mind you, it's not like, "OMG this is raspy mid range." Not at all, and had I not been using another amp that, to me, had a more natural presentation, never gets fatiguing, and has all the qualities of wide sound stage, very accurate reproduction of all instruments and vocals, plus a little tighter bass than the Qinpu.
The amp I'm speaking of is the Audioengine N22 (22 w/ch) which I bought from Audio Advisor for $299. I did not do any checking to see if you guys have reviewed this amp. If not, it's worth an audition for sure.