Hey! Its Stello right? I had the Stello DA-100 Signature right before I got my BDA-1 from Bryston. The Stello was pratty and almost aggressive, which I liked. The BDA-1 is a much more sophisticated Beast, very even handed and natural across the board. Also more resolving with a sweeter more extended top end. Its definitely a step up from the Stello DAC, though that DAC had some great qualities too.
Mike