Mesa M9 Carbine in the factory head case. Plenty of information and reviews on this beast here on TB ... nothing much to add. Low hours and in excellent shape. The amp has seen very few gigs and has spent most of its life in my music room. Purchased new in February of 2010. Only issue was a malfunctioning on/off switch. Brought it to the local authorized Mesa shop in July of 2011 for replacement. He sent it back to Mesa for the factory upgrades (see thumbnails below). Since I got it back, it hasn't left the house. When I did gig with it, I paired it up with (2) Acme Low-B2s and ran it at 2 ohms without a problem. I love the amp, but have more stuff than I can use. $925 shipped in the original packaging. CONUS only PayPal preferred.