I just got this pedal from another forum member this week. I love a great boost pedal. Most of my amps have a sound I'm not looking to change much, just give a goose to occasionally. I've owned or own The Germ (prototype and production), vintage MXR Micro amp, handwired Time Machine Boost, Klon, Red Llama, etc. This one is really different and is exactly what I was looking for. It retains the sound of your amp, just makes it louder and bigger. Big and fat, with a sweet and dynamic top end. It is not an overdrive box, but will seriously push your amp in volume if needed. Controls are gain, level and tone, with a 3-position compressor switch that is unique. The tone control is voiced nicely and a welcome addition IF you want to tame some top end off the additional volume. The compressor part of the Sexdrive is what I love. It offers soft, hard and no compression (the hard compression is a misnomer---not gated at all). All the settings do is change the FEEL of the boost, not the tone. It sounds and feels great in all three positions, but I REALLY like the soft setting. It makes a great sounding amp just louder and sweeter. My Connie needs no gain pedals----but the Sexdrive and the Connie are incredible together. With the amp set nearly clean, the Sexdrive pushes it into this endless clean sustain that then goes up an octave or two. Wow. Unlocking more goodies inside the amp. This pedal is a keeper. It sounds great, but FEELS even better--an area where many boost pedals have fallen short, IMO. Velcro has been attached, space has been made on the board.