ivanj,
Thanks for advice but that was a couple of years ago. The purchaser has moved on.
For what it's worth the ARC Ref 250 is no longer in my system but it was a great amp, better than many I've had here. I do prefer my Allnic M3000 and M5000 but should disclose I work for them even though that position is seven years after my moving to the line out of love for the sound :-)