how good is the sun audio sv2a3

I have a mac 240, jadis da60, mccormack dna.05 special edition and the sun audio sv 2A3. I do most of my listening now with the 3.5 watt sun audio in my 12 x 19 room. Speakers are montana 2, 90 db 4.2 ohm impedance. The amp is really that good with the kind of music I listen to- mostly vocals. Try norah jones (anyone of two cds) and find out what the 2A3 is capable of. Prepare to be surprised or probably this is already old news.