I had a Turtle Beach sound card but upgraded to an Echo Layla 24 sound card that enables me also to record instruments on my computer.It was a definite improvement in fidelity using my Mackie HR824's as monitors.It was not cheap at around $500 however.I do believe they have smaller units that probabaly offer an increase in resolution as well.So i believe the answer to be yes.I am not familiar with your other components but i know the better sound card definitely was an improvement for me.
