Hello, I had the SX2's for a year or so. I found them quite artifically tinny and never really got on with them. I used them with a NIAM Nait, it was all just dynamics and no body. I think going for a Marantz or NAD like suggested would be a better solution.
Seem like issue with lousy/bad source which a Nait reveal better than Nad/Marantz
A well known scenario, many users forget the importance of source and setting up, resulting in medio/crap result