Great sound wiht adjustment to the shape of the curve for variety from Vox to Fender sounds. Aggressive or soft. Sounds like a real amp's tremolo circuit. I added a Telecaster knob on the rate, as it allow you to adjust with your foot. If u prefer, I might be able to find the old black knob, but the bigger knob is really useful on a gig to dial in the rate on the fly! Also includes a volume knob so you can ensure that it feels as loud when the tremolo kicks in OR use it as a BOOST pedal by kills the intensity if u need a solo boost instead of tremolo!!!!! Velcro on it - ready to go!