The Subdecay Tomato Fuzz Pedal is similar to many classic fuzz designs but the Flying Tomato adds a number of modern improvements. It doesn't stop at true bypass and an LED.  It also works with other pedals and active pickups.  Subdecay added Tone controls and a bias control.  This fuzz goes from hair raising, to classic, to gated. What is the Tomato? The Flying Tomato is loosely based on the classic two transistor fuzz design, but with many modern improvements including, a switchable impedance matching input buffer, tone controls, bias control, true bypass switching, and an LED indicator. The Tomato input buffer allows it to  work after virtually any pedal, or with active pickups. One of the ideas they strive for at Subdecay is pedals you can "match" to your guitar and amp.  Some fuzzes sound great with a  combination of certain guitars and amplifiers, but sound awful with others.  With the bias, and tone controls, you can dial in the sound you want, and still cut through the mix at your next gig.