er... "sound quality" means recording quality AND playback quality. If you're a home or even pro musician, you want both. Garbage In Equals Garbage Out, as the saying goes.
The higher the bitrate, the better. (16bit, 18, 20, 24bit, etc.)
The higher the sampling rate, the better. (44.1khz, 48khz, 96khz)
The higher the signal-to-noise (s/n) ratio, the better. (most game cards fall below 100db)
And other factors that tend to produce cleaner, MORE RELIABLE sound in both recording and playback as well as faster response times. Hardware support from your music software is a critical factor here.
To put it in a gamer's mentality: A game written for 3dfx video cards will support 3dfx video cards better than generic "across-the-board" support. Worse, if it ONLY supports certain hardware, your video card might not work at all. Games used to be that way, and to a small degree - still is.