Can you advise on how best to setup my hardware for use with my headphones?

[nightrider1470]

Hi! I own some MA900 + Denon D2000 I have a yamaha V673 receiver and a Astro Pro 2013 Mixamp + Fifo E5 headphone amp.

What setup should I be using for xbox gaming and watching bluerays? Also there are a lot of DSP modes on my receiver!. Is it best to set straight, all though 7 channel steero seems to sound good to me

 

[sHo0sH]

You need optical in to the mixamp. Ideally your amp would have an optical out but most do not.
So optical switch with Xbox and bluray player hooked up to it then the mixamp will properly do it's job.
Unless the Miami has 2 optical in. Just use both