Up for sale is a very hard to find amplifier. The AER Basscube 2 is the gold standard of upright bass amplification. It works very well for both upright and electric bass. Super hifi sound and features galore. I think the only reason you don't see more of these is that they sell for just shy of $4000 new. This one is in incredible shape and can be yours for $1800 USD shipped (conUS and Canada) Comes with padded cover and original box.