My last boost pedal, Rothwell Atomic Boost, you would get to a point where you couldn't turn it up any more, you would start overloading and you could start to hear ugly distortion. With the EP Booster your sound gets fatter and you can turn it all the way up and it just adds a nice big warm saturation, that SRV blues breakup strat sound that you need to play loud to get is what this thing does and as you turn it up it adds more and more. Its not gain, it's fattness, where the Rothwell was all volume, if that makes sense. My Renegade is a very good sounding amp, not the best but for the money, very good. With the EP Booster it's spot on retro blues rock awesomeness. I would love a Dr Z Z Wreck, but would I be happy......The Renegade does everything I want and together with the EP Booster now I think it's my dream tone. I have loads of overdrive pedals that over the years have made my pedalboard get bigger and bigger, but at the moment all I'm using is the Renegade, delay and a boost pedal, didn't think I would better the Rothwell but the EP has blown me away. I wish I had found one years ago. Does it make your gain a bit more agressive....it gives it more thickness so you end up taking gain off which in turn keeps the gain tight and your eq opens up. Rolling off the guitars volume to clean things up then turning it up to add the gain for lead work gets stupidly easy as my amp just seems to be working even better. I hate to say this......it's TONE in a pedal, lovely transparent tone in a pedal.