No prizes for guess the overdrive flavour here... yep, it's a Marshall style pedal. But, in a fun twist, it's a really terrific one. The 'normal' and 'master' controls interact in a manner very similar to my JCM800 at home, it's very realistic. There's a sweet rich crunch and heaps of attack on board, it's a whole lot of fun. The 18v switch is cool too, although in my books it's so much better on 18v mode that I'd likely never use the 9v mode. Marvel-ous. 

Model: Ramble FX Marvel Drive v3
Made: USA, recent model
Type: overdrive/distortion, Marshall Plexi style
Power: standard 9v negative supply, not included
Switching: true bypass
Equivalent new street price (approx): $259aud
Mods: none
Accessories: original box and manual
Condition notes: used, few minor marks, fully functional. Overall: very good condition