I've also found that I've got a couple of other adapters from other bits of kit that work fine - all that's required is that they are (if memory serves) 2.1ml, 12v, centre-positive, and capable of supplying 1A or more.

For example, the PSUs for both my scanner and steering wheel both work fine with my Empeg. Before you buy another dedicated Empeg one it's probably worth seeing if you've got anything else that will do as a temporary measure.

Bryan.