What would be upgrade from my setup for PC sound


I'm currently using M-Audio Transit.

The set up is:

PC USB out ---> M-Audio Transit USB in ---> M-Audio Transit Optical Out ---> Meridian 561 processor Optical In.

It works nicely and the sound quality is pretty good for both Music and DD/DTS Movie.

What will be the upgrade options?

I prefer this USB to Digital way.
eandylee
Steve at www.empiricalaudio.com also does an upgrade of the transit, he has several different versions which I heard at RMAF, and was very impressed. I am planning to demo his off-amp and modified P3A Dac in my system.
wow... I didn't expect actual 'upgrade/mod' of the Transit.
Very interesting.

Any other products considered upgrade from Transit as far as sound quality?

Thanks.
You can try get your Transit modded by Red Wine Audio.

http://www.redwineaudio.com/USB_Select.html

Regards,
Michael