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http://www.hometheaterhifi.com/qa/qa2002/qa315.html How do the bits and MHz affect picture quality? DVD video is an 8-bit format. The goal is to reproduce all 8-bits. It often requires at least a 10-bit DAC to reproduce the 8-bits on DVD. In theory, an 11-bit, 12-bit, or 14-bit DAC could offer a lower noise floor, but we are not always seeing this in the field. The higher MHz DACs, in theory, can produce a cleaner more accurate image, but the 108 MHz DAC-based products we have seen are not always doing this. The Denon 9000 is using the latest AD7304 video encoder, and is 14-bit with 108 MHz DACs. However, we see a lot of ringing in this DVD player. We have compared it directly to a Meridian 598 DVD player that is using an 11-bit / 54 MHz DAC. There is much less ringing on the Meridian player. We suspect this is because of different digital filters used inside the Denon DAC and the analog section after the DAC.
