I still have the Bel Canto 3.0 that is kept even after moving up the "food chain", because it still sounds good and is so versatile. I use optical cable input for 24/192 streaming from my tv to balanced (Ayre) amps. Use balanced with this unit if you can, as there is a difference. Bel Canto build quality, power supplies and the pre-amp also included in your unit are great.
Also, If you decide it's needed, BelCanto USB converters can be found for around $200. In a previous second system, I used USB digital from desktop to BC Dac 3.0 as pre-amp with a Jeff Rowland power amp, to good effect.
Enjoy!