Analog Front End and Boost!The Source Audio ZIO is built to, in the company’s own words, "make everything sound better".In other words, it's much more than just a simple boost pedal!Featuring an all-analog design, ZIO boasts four distinct preamp circuits to take your tones to the next level.ZIO is a deceptively flexible unit that can serve many different purposes at various places in your signal path.Whether it’s boosting your combo into low breakup or trimming the fat off a thrashing high-gain head, ZIO delivers!Boost pedals can sometimes come across as one-dimensional, but the power and versatility of ZIO truly set it apart from the rest of its 1-knob brethren.ZIO’s intuitive controls make it easy to dial-in any sound: Output, Circuit, Tone, and Switch are the only functions you’ll have to worry about.Four distinct preamp circuits!ZIO serves up a quartet of unique preamp circuits to perfectly dial-in your sound:JFET : Designed to function transparently, the JFET boosts without adding in any unpleasant harsh qualities.Low-cut : This mode strictly impacts the low end with no changes to the low midrange. Works great to improve headroom and clean up your mix.Studio : This mode takes inspiration from the famous “Pultec trick” of the 1950s to provide greater clarity to your sound.E-Plex : Modeled on the famous '70s Tape Echo. Provides a slightly dirty, midrange-focused boost that is dripping with analog character.Source Audio Zio Pedal Features:• 100% analog Preamp & Boost pedal.• Output designed to work as an uncolored buffer with no tone suck.• Up to +20dB of boost.• 4 highly versatile preamp circuits.• 3-position Tone switch to shape your sound.• True Bypass.• Power: 9V DC.• Current Draw: 20mA.• Dimensions: 2.22" X 2.36" X 4.1”.