Matrix Quattro Dac

Been researching for last couple days for a Dac that has the following requirements:

1. Both balanced and unbalanced outputs.
2. Preamp so I can run it directly to my speakers (Quad 12L active)
3. Several inputs including usb/spif
4. Up to $500.00 in price.

So far two top contenders have been the Emotiva DA-1 and Matrix mini. Well just stumbled not eh Matrix Quattro which seems like a clone of the Benchmark 1. Anyone heard of it?