Up for sale is my second pair of AQ Columbia XLR at 29.5" or 0.75m length. I just replaced the batteries, when I took my system apart, one of the 72v cases was bulging. I pulled out the batteries and found two of the original 12v cases had split all the way open. The mini batteries inside those cases were still sealed and no leaking, but I wanted to disclose this anyway. I put in new batteries, super glued the case back together and screwed the cap back in place. Still 100% operational, the one 72v case just isn't as pretty as it was.
I am original owner, bought brand new last year from Music Direct with other pairs.