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<blockquote data-quote="nguyendot" data-source="post: 232938" data-attributes="member: 548366">It&#039;s not a matter of opinion, more voltage reduces the likelihood of noise introduced into the system. This raises signal to noise ratio, higher s/n ratio = better sound quality.Also.. the Alpine mentioned CDA-7995 is a dead head, with no internal amplifier, there is better quality, less interference, (along with the blackout mode to turn off the face).MP3 is definitely better... AND existant on the CDA-7995. It is non-existant on the Panasonic CD-DF903U.Panasonic uses Sirius, Alpine uses XM. XM has been proven in car audio magazine, and many others to have better sound quality over its broadcasts.Frequency response on Panasonic: 20-20khzFrequency response on Alpine: 5-20khzCD signal to noise ratio Panasonic: 96dbCD signal to noise ratio Alpine: 105dbNo cd-text on the panasonicCd-text on the alpineAngle-adjustable face on the AlpineStationary on the Panasonic.In the case of the 2 he&#039;s looking at, the Panasonic has 5v preout, and the Alpine 4v.The panasonic has an aux input, the alpine optional (29.99 for the adapter).All in all, you get what you pay for. The alpine he&#039;s looking at IS better, clearer..etc.</blockquote>

[QUOTE="nguyendot, post: 232938, member: 548366"] It's not a matter of opinion, more voltage reduces the likelihood of noise introduced into the system. This raises signal to noise ratio, higher s/n ratio = better sound quality. Also.. the Alpine mentioned CDA-7995 is a dead head, with no internal amplifier, there is better quality, less interference, (along with the blackout mode to turn off the face). MP3 is definitely better... AND existant on the CDA-7995. It is non-existant on the Panasonic CD-DF903U. Panasonic uses Sirius, Alpine uses XM. XM has been proven in car audio magazine, and many others to have better sound quality over its broadcasts. Frequency response on Panasonic: 20-20khz Frequency response on Alpine: 5-20khz CD signal to noise ratio Panasonic: 96db CD signal to noise ratio Alpine: 105db No cd-text on the panasonic Cd-text on the alpine Angle-adjustable face on the Alpine Stationary on the Panasonic. In the case of the 2 he's looking at, the Panasonic has 5v preout, and the Alpine 4v. The panasonic has an aux input, the alpine optional (29.99 for the adapter). All in all, you get what you pay for. The alpine he's looking at IS better, clearer..etc. [/QUOTE]

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