musical fidelity a5 int

is it working

hello my speakers are pmc db1+ and arcam 192 and modified arcam 5 i bought the musical fidelity a5 and i loved it at first a big step up from my arcam alpha 10 but after a while the treble sounded bright to my ears and i had to take it back is this normal for this amp or is it my speakers or cds thankyou