This is FM acoustic's model 600A MK II, a excellent power amp.
This is professional version of FM 611.
This is twin brother of FM 611.
So performance is almost the same.
This amp is in great condition.
Amazingly, it was just recapped by original FM acoustics company around 2012/01!
Therefore, this 600A MK II still has 3 years original guarantee!
Of course, original boxed, and owner's manual were included.
The output of this 600A MK II was 350W at 4ohm, which was bigger than previous 600A MK I.
Besides, it can afford large current output, even under 2 ohm impedance!!
Open to offer.
Feel free to ask.
As you know FM acoustics is magical and ultimate gear in HiFi.