Synthrotek has introduced DIRT – a new 4HP low-pass filter / effect for Eurorack modular synthesizers.

Here’s what they have to say about it:

Inspired by one of our favorite ‘noisy’ filters, the DIRT is an unapologetic filter / effect that produces some interesting and unique effects thanks to having front panel access to the Bias knob. DIRT likes to square things up a bit, so throw in a triangle, sawtooth, sine or other wave forms for different style effects.

Even plugging a guitar (using an external amplification module) into the DIRT produces some great sounds and heavy distortion. From filtering, ring mod effects, wave shaping and outright brutal harmonic distortion, the DIRT is not a traditional filter but more of an effects module.

Controls:

• CUTOFF = Cutoff Frequency
• RESONANCE = Increase the Q!
• BIAS = Set the bias correctly or not, the choice is yours

Inputs/Outputs:

• CUTOFF CV IN = Voltage range changes depending on where CUTOFF knob is positioned. External attenuation will be needed for fine modulation.
• AUDIO IN = Audio Input
• AUDIO OUT = Audio Output

It’s expected to ship in early August and is priced at US $99. See the Synthrotek site for details.