http://www.earthquakerdevices.com/shop/Bellows/cat/13103
The Bellows is a back-to-basics, transistor-based dirt device. This two-knob wonder has a whole lot of character for such a simple, unassuming pedal. It straddles the line between amp-like grit and fuzzy saturation to create a remarkably vintage, tweed-type tone. Similar to the volume control of a “non master” amp, the Drive determines how hard the signal hits the input. At lower drive levels it's a little wider and grittier. Resist the usual urge to dime it and keep the Drive low for mellow, amp-like break up. Slowly bring up the Drive and you'll eventually end up in blown out fuzz land, having passed a bunch of useful distorted places in between. It's pretty much every era of rock n' roll in a box. While designed for guitar, Bellows also handles bass extremely well at growling low and scorching high levels. And if you're a guitar player that fancies themselves a bass player- then forget it, this is your favorite dirt pedal. Each and every bellows is made by a bunch of bearded dudes and a couple ladies in the comedic drama section of Akron, Ohio.
This device is true bypass and uses relay based “soft touch” switching. Audio will not pass without power.
Controls
Level: Adjusts the output level by setting the bias voltage of the transistor. A small amount of noise while dialing this in is perfectly normal.
Drive: Controls the input gain of the device for different levels of dirt. You’ll find that it is thinner and more clean counter clockwise and thicker with more growl clockwise.
Power: Please use a standard 9 volt DC power supply intended for musical instruments with
a negative center 2.1mm barrel or a 9v Battery
Current Draw: 8ma