It's the Eden D210XST speaker cabinet, which I run along with a D115XLT, driven by my WT-550 head. This is THE cab, IMO -- equipped with heavy duty 10-inch cast-frame speakers and a horn, it can handle up to 450 watts. Frequency response goes down to 3o Hz -- that's actually LOWER than the 1x15 cab -- while still producing a tight, middy punch. Sounds great as a solo cab for smaller gigs. Maybe the best cab I've ever owned. It's the nuts!