BlaknbluFoxtrot Quad Multimode Filter

Blaknblu Foxtrot

Foxtrot from Blaknblu is a quad multimode digital filter emulating three classic filter topologies, with stereo inputs and outputs, multiple voltage control inputs, and linking for sweeping formant tones and complex filtering. Each filter may selectively invoke the classic nonlinear resonances of the Moog ladder filter, the punk transcendence of the Sallen-and-Key filter in the Korg MS-20, or the sweet and gentle state variable filter from the Oberheim SEM. With two inputs summed into each filter, Foxtrot is a highly capable tool for adding complex spectral movement to any sound in your rack.

While the sonic signature of each filter has been dialed in for fantastic and faithful reemergence into your Eurorack rig of choice, each type may be smoothly morphed between low pass, band pass, and high pass modes. This adds tremendous control combined with the Aux CV input, which can selectively control the filter type mix, resonance, or panning of the stereo output on each filter. Additionally, add drive with the boost switch to push the filter into added saturation, imparting new colors in your tone. With the linking switches, each filter links to the next, with the leftmost linked filter now controlling each subsequent filter with a constant frequency spread. Blaknblu has ensured that Foxtrot features comprehensive spectral control with intuitive operation, offering a fearlessly flexible filter bank that will be at home in any large system.

Foxtrot Features

• Quad multimode virtual analog filter
• Three filter modes: Moog ladder, Korg MS-20, and Oberheim SEM
• Dual inputs summed together with independent level control
• Cutoff control with two independent CV inputs
• Continuous sweep through band pass, low pass, and high pass per channel
• Boost switch per channel
• Aux CV input controls mix, resonance, or pan control
• Dual mono output except when in Aux CV pan mode, which offers stereo output
• Link filters to control each cutoff simultaneously for formant sounds and more