I've been finding that my Markbass LMIII doesn't like the relatively high gain sounds that I'm throwing at it now that I've found myself in a Hardcore punk band. From what I can gather I've been overloading the preamp which causes it to cut out.
Anyway, this ABM 600 Evo iv came up locally on market place, a few messages later a price was agreed and the seller even offered to deliver it as he was passing anyway. It's in basically perfect condition and seems to have only been lightly used.
I've only tested it at home so far, I've got to say I'm super impressed by what I've heard at low volumes, but the real test will come in the new year.