Vertex Steel String MKII Overdrive

Awesome !

Sounds Great ! John Mayer Style Tone

I've never tried a Dumble amp myself. I've never been close to one (except for some artists I saw on stage, but I wasn't that close anyway). I can't say that it sounds just like a clean Dumble Steel String but actually I don't really care much about that. What I can say is taht I like a lot of the sounds that come out of it played through a clean amp. It can be used as a very nice booster with lots of character and it surely is in the area of the tones I listen to on records of people that reportedly play with such amps.

It's a great sounding very well built low gain overdrive pedal. I love it!

A very good pedal

Wonderfully open and transparent, very well made and combines easily with other drives. I use mine before a Shanks ODS-1 (Les Paul) or before a Wampler Tumnus Deluxe (Strat), for bluesy chunchy tone and great flexibility.