1000 watt Class D amplifier. Very, very powerful. Sealed box, not ported, so also very tight.
Musical and fast sub, as you would expect from an electrostatic company.
Wireless transmitter and receiver are included, so this sub can be placed anywhere in the room, without stringing wires.
Switches easily from downward firing to front firing. Many options with this sub.
Well regarded and reviewed around the web. See the product page for complete info:
This is essentially an open-box item. I bought it from a local dealer, played it a few times with movies in a rental house we were temporarily in while house was being worked on. When we moved it went back in the box and I got my other subs (including another ML Dynamo 1000) out of storage, so no longer need this one.
Item is mint, in original box, with unopened and unused wireless transmitter, receiver, accessories and manual.
Price is very reasonable, the lowest I found for one in new condition. Money back guarantee.