OK! I figured it out! Sound Mode Setup with dual output setup!
1. Plugged in Headphones into the FiiO e10 DAC+AMP and set it to default device.
2. Plugged in the Gametrix-908 Jet Seat into the Creative Lab Soundblaster Zx sound card ( to use the used Creative Studio EQ to play around with settings)
3. Set my Headphones to playback through the Gametrix-908 Jet Seat via Stereo Mix.
No matter what I did - I couldn't boost the Gametrix Jet Seat feedback with the SB software to the levels that remotely reached the DAC+AMP with zero effort (it literally was plug and play). I think the issue was with the soundcard so I sent it back.
Thus, the best results (for my hardware setup) was simply connecting the Headphones + Gametrix Jet Seat into the DAC+AMP directly.
Setting the in game sounds to 50% gave my ears leeway run up the DAC+AMP to higher levels which obviously gave more juice to the Headphones + Gametrix Jet Seat combo. The guns sounded amazing and the engine rpm changes were noticeable - but not as pronounced as I would like.
Maybe if someone had EQ settings and other setup instructions on how to use EQ settings to separate engine sound from other gun sounds - this isn't as issue with DCS as the API communicates with the Gametrix Jet Seat. Note: This is just a Sound Mode Issue for games that do not support the Jet Seat.
Awesome product Andre!