A noob's 1st post, please be gentle ;)
Here is a little background/setup notes:
I run a pair of AD900X, which I like but do see upgrading @ Xmas.
I recently RMA'ed my Essence STX to my retailer, and to my surprise they sent me a brand new sealed replacement, I decided to sell it to cash in to dive a little deeper in dedicated DAC solution.
I have since bought a Maverick Audio D1+ with OPA627 OpAmp upgrades (and GE5670W tube which i don't use). I wanted the convenience of plugging my TV's Toslink (hence all my game consoles/satellite down-mixed) to the DAC/Amp combo and switching between sources.
Here is my problem I need advice on:
On the PC side of things, I have a ground loop problem (i think) when using the DAC's USB and Coaxial input from my on-board sound causing disgusting digital noise. This can be fixed by using optical out but that is reserved for the TV.
Another problem is it does this removed (not my video), says headphone/speaker is unplugged the plugged in often 'alt-Tab' me out of a game! This was always the issue, that is why I bought a STX in the first place and disable on-board sound in BIOS. Motherboard is an ASUS P8Z77-M Pro.
Also I am not satisfied with the SQ in music of the D1 compared to my previous Xonar STX setup. Would it be worth while to repurchase another Essence STX to use the RCA output running to the D1 using it's amp (and better opamp). This with give me the full 124dB SNR correct?
I still like the D1 to use with my TV.
Thanks for reading and any advice or enlightenment will be helpful.
Edited by BornEvil - 10/25/13 at 4:46am