Considering the strong feelings Vertex seem to arouse on the internet, I'm prepared to get flamed for this, but whatever. Got myself a Vertex Steel String the other day. This pedal is meant to emulate a Dumble SSS and the tones from players such as John Mayer and SRV. I bought it as I play a 100w Ceriatone OTS, which is of course based on the Dumble ODS, but lately I've been craving that clean, chimey SSS tone. I've been wondering how close to that sound I can get with my OTS, and therefore this pedal seemed interesting. After playing around with the Vertex for a little while, I was positively surprised with how good this made my amp sound. With the gain knob set low and the volume high, I landed right into Continuum-territory. It made my tone livelier, and added a beautiful shimmer to the highs. When the gain knob is cranked, I got that clean-but-not-really type of tone, that enhances the dynamic and expressivess of the amp. I always play the OTS with the preamp boost engaged as the amp always sounds better that way, and this pedal kinda has the same effect, but with a different flavour. I'm hoping I can use this as an always-on pedal for when I can't use my OTS to bring some of the Dumble vibe out from other amps. So far, I haven't gotten a bad sound out of it, but on the other hand it doesn't do to many different things. It basically goes from super clean boost to pretty clean boost, so adjusting the knobs never does anything drastic. I also find that it works better with single coil guitars than with humbuckers, probably because they put emphasis on the highs. Having a 100w amp probably helps in giving the pedal the required head room for this type of sound. So overall, I'm very happy with this pedal. Vertex get alot of crap on forums, but justified or not, credit should be given where credit is due, and the Steel String is such a great pedal that does exactly what it promises.