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<blockquote data-quote="igeriys" data-source="post: 2206493" data-attributes="member: 569002">I had same kind of problem you having, I couldn&#039;t decide on soundcard/DAC for my SQ Carputer setup. So I had to read over 1000 posts on mp3car.com forum before I made my mind. I can share with you&nbsp; some thing I learned about the &quot;SQ and the Carputer&quot;:1. Power Suply matters a lot. If you are plannig to use a power inverter,&nbsp; forget about the SQ. It&#039;ll make a constant system noise no matter how well u ground it. (proven //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif&nbsp; )Use only DC-DC PSUs. Opus-250 most powerful PSU available <a href="http://www.digitalww.com/opus250.htm" target="_blank">http://www.digitalww.com/opus250.htm</a> plus it got automatic shutdown/sleep option.2. Forget about the RCAs, think Optical.&nbsp; All soundcards I know don&#039;t produce more than&nbsp; 1-2 volts output and that includes Audigy X-FI and M-AUDIO Audiophile. Auzentech X-Meridian is the only one exception with 4v preouts but its not out yet.Just use any card&nbsp; equipped with toslink style optical out.3. External DSP/DAC with Optical Input.Zapco DSP6-SL is #1 but pricy. The best price/quality DSP/DAC is Alpine PXA-H700/H701. It will convert your optical signal to 4v analog, also got: 165 Band Graphic EQ, 27 Band Parametric EQ, Dolby PRO LOGIC II, Time Correction, etc</blockquote>

[QUOTE="igeriys, post: 2206493, member: 569002"] I had same kind of problem you having, I couldn't decide on soundcard/DAC for my SQ Carputer setup. So I had to read over 1000 posts on mp3car.com forum before I made my mind. I can share with you some thing I learned about the "SQ and the Carputer": 1. Power Suply matters a lot. If you are plannig to use a power inverter, forget about the SQ. It'll make a constant system noise no matter how well u ground it. (proven [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] ) Use only DC-DC PSUs. Opus-250 most powerful PSU available [URL="http://www.digitalww.com/opus250.htm"]http://www.digitalww.com/opus250.htm[/URL] plus it got automatic shutdown/sleep option. 2. Forget about the RCAs, think Optical. All soundcards I know don't produce more than 1-2 volts output and that includes Audigy X-FI and M-AUDIO Audiophile. Auzentech X-Meridian is the only one exception with 4v preouts but its not out yet. Just use any card equipped with toslink style optical out. 3. External DSP/DAC with Optical Input. Zapco DSP6-SL is #1 but pricy. The best price/quality DSP/DAC is Alpine PXA-H700/H701. It will convert your optical signal to 4v analog, also got: 165 Band Graphic EQ, 27 Band Parametric EQ, Dolby PRO LOGIC II, Time Correction, etc [/QUOTE]

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