Maxon '01 Series' pedals were made in the late 80s and sold exclusively to the domestic Japan market. This is basically a take on the Ibanez SM-9, which Maxon made, in a new box. It's driven by a pair of op-amps and has that punchy, thick tone that's hard to get without a cranked tube amp. The EQ is super powerful too. Sounds absolutely nothing like an HM-2, sorry/praise be.

Model: Maxon SM-01 Super Metal
Made: Japan, late 80s (serial 155731)
Type: distortion, mid-high gain
Power: standard 9v negative supply
Switching: buffered bypass
Equivalent new street price (approx): n/a
Mods: none
Accessories: no box or manual
Condition notes: used, few scuffs and marks. Overall: good condition