No, Tyler, in general you won't get better sound quality from the stereo amp. The only circumstance would be if the stereo amp was higher powered and it happened that the receiver distorted at peaks(unlikely)when you played it at very high levels where the amp still would have been clean. Unless you think that it'll be a very long time before you add surrounds(which should definitely come before a center)you should get an A/V receiver so that you'll be ready.

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Enjoy the music, not the equipment.