Middleman said:
Yeah that is the big question. I would like to know if the masking is at the D/A end of things too. Could be that the A/D is OK with lower end cards and that an investment in a good D/A would be a cost effective approach to getting a better sound.
Any thoughts on that one to anyone?
There's a pretty good discussion of this very issue going on at Gearslutz (
http://gearslutz.com/board/showthread.php3?s=&threadid=6993 ). The long and the short of it seems to be that jitter is introduced in both stages (Analog to Digital conversion AND Digital to Analog conversion). For those who are not aware, jitter is clocking irregularites that result in changes to the signal upon conversion (A/D or D/A). Control of jitter is largely the difference separating better converters from lesser quality converters.
There are two camps and IMO
both are right. If you want high-end sound, you need good A/D conversion
and quality D/A conversion. The A/D camp says that good A/D conversion is needed because if you jack up the sound upon initial conversion, the "garbage in, garbage out" maxim applies. That is jitter in the input process results in a compromised source recording. The other camp says that even if the A/D conversion was not the best it could have been
if the mix engineer can accurately hear the signal for all that it is or isn't, a good mix can still be created due the accuracy.
Frankly, I want both stages to be top-notch. Everyone seems to be raving about the Benchmark DAC-1 digital to analog converter ( see
http://www.benchmarkmedia.com/ ). It has a street price of about $700, I believe.
The DAC-1 will be my next purchase in the D/A arena. Benchmark also just came out with a 2 channel A/D and preamp in the ~$1000 arena and I hear they are coming out with a 2 channel A/D without preamp in the coming months.