Updated upgrade of PC

[tbair19]

Since I last posted an inquiry for your help...I have done some hopeful improvements to my PC but have not noticed any change so to speak in its performance. I have been looking to improve my PC sound quality with a new pair of Sennheiser HD 598's, unfortunately my volume on my system needs to be .5 to .75 turned up before I get increased volume?
What I have put into my system are as follows:
 
1. Asus Xonar DGX sound card
2. EVGA GeForce GTX 750Ti graphics card
 
I should have listened to Purple Angel and did the DAC/AMP combo pkg instead I'm thinking?
 
Bottom Line:  Would like to increase my volume on anything I plug into my system without turning them 3/4 of the way?  Can anyone help?
 
Thanks

 

[PurpleAngel]

You could get a FiiO A3 (E11K) headphone amplifier, $60.
Plug it straight into the Xonar DGX.
Just max out the volume controls on in Windows and the Xonar control panel.
Control volume using the A3.
 
Later on maybe find a good deal on a used Xonar DX sound card, better DAC chip then the DGX.

 

[tbair19]

Thank you so much.  I will just replace the sound card now.