its actually very good, a little bright, but detailed with it like few others.
Designed by John Westlake of pink triangle fame, so circuitry is really good, made of course in china, but build pretty good, components not bad, analog devices opamps in output.
just noticed you have an a400, this can err on the bright and brash if driven to hard, so could be taking in the wrong direction, but can' t go wrong for the cash....