2025 is the fourth year in a row that EarthQuaker Devices has approached Chicago Music Exchange with a chance to get the one-of-a-kind pedals from their annual EarthQuaker Day celebration. We look forward to getting them each year and we are very excited to offer them to you. Each pedal is unique and only available at Chicago Music Exchange. When they're gone, they're gone.

The Dirt Transmitter is one of the oldest circuits in the EarthQuaker line. The design is Fuzz Face inspired, and the idea started when Jamie Stillman came across some very unique silicon transistors. These transistors are lower gain and have a warmth similar to germanium transistors when overdriven. But they also have the top-end grind typical of silicon-based fuzz pedals, which adds to the mids and helps cut through.

The first Dirt Transmitters started shipping in January of 2008, and these original units were housed in a small enclosure with only three controls: Fuzz, Tone, and Level. Shortly after the release, Jamie decided to add the external Bias control, which opened up the circuit and brought it to life. By varying the Bias the transistor is starved of voltage.  The Dirt Transmitter is properly biased when the Bias control is all the way up; when turning it down, the voltage is starved, and the fuzz tone becomes gated.  This produces a sputtery ripping velcro tone that increases in character as you roll it back.

The combination of these rare transistors and the starved voltage creates a wide variety of textures at the turn of a knob, which made the Dirt Transmitter a beloved mainstay in our line until its untimely discontinuation in 2017.

After the session, there was talk about doing a pedal release in conjunction with the album, and the DirtTransmitter was the perfect fit; seeing as it was used so much during the session. Dave was down and the plan was solidified. He suggested we use his friend, Mike Egan, to create some super special Rancho-themed art to celebrate the occasion. It just so happens that Mike is from Ohio and lives just a short drive from EQD headquarters. It all just seemed to fit together perfectly.