There are various interpretations of brown sound, but the thick brown sound of the 1980s is the sound of PUSH & PULL DISTORTION.If you connect it to a clean amplifier and make a sound, you can instantly recognize it. Easy to handle, strengthens the edge of the guitar tone, and is a thick distortion. Long tones are also connected smoothly, and it is a tone that goes well with legato and light hand and bend, and high-speed alternate picking. Distortion that makes the sound lively and shining even in fast play. It is the true value of PUSH & PULL DISTORTION.  Specifications LEVEL: Adjusts the overall volume. DRIVE: Adjusts the strength of distortion. TONE: Adjusts the tone mainly in the high range. Current consumption: 0.5mA Input impedance: 500K ohm Output impedance: <2k ohm PUSH & PULL DISTORTION uses a true bypass footswitch and is powered by a 9V battery or a standard center minus DC 9V adapter.