Okay, I did it again: I bought this just because I thought the name was funny. Nothing is more metal than being a Mum really, I mean... they literally push a human out of their bodies, that is metal AF. This sounds a bit like an  HM-2, but a little less brash, and has a powerful EQ. Wind that HI control up for some nasty snarly honky goodness. Mum is gonna be so disappointed in you, but hey, I'll be proud.

Model: Ken Multi MUM-7 Ultra Metal Distortion 
Made: Japan, 1985 approx
Serial: 003384
Type: distortion
Power: standard 9v DC negative power supply (not included)
Equivalent new street price (approx): N/A
Mods: none
Accessories: none

Condition notes: used, no major marks. Tested and fully functional.
Overall: very good condition (8/10)