Unfiltered Audio releases free BattleFX plugin for drum processing

A dry kick or snare can turn into a much bigger statement with the right send chain, and Unfiltered Audio has now pulled Battalion’s most recognizable drum effects out into a free standalone tool. BattleFX packages the Shatter Delay and Headspace Reverb that Battalion users had been leaning on, then opens them up for any track in a session, not just the drum synth itself.

That matters immediately for drum processing. The plugin is built around the kind of jobs beatmakers reach for every day: transient shaping, bus grit, parallel destruction and punch enhancement. Unfiltered Audio said BattleFX was created in response to requests for a dedicated plugin for Battalion’s send effects, and it adds a fully featured mix section, plus Solo and Mute controls so each effect can be auditioned or isolated on its own. The release also carries over Battalion’s Master-section Maximize and EQ stages, which gives the plugin a fast route from clean source to aggressive finished drum tone.

The rhythmic side is where BattleFX gets especially useful. Unfiltered Audio added an automatic choke system for the delay and reverb buffers, along with a Euclidean pattern knob, so the effects can run tempo-synced or free and be nudged slightly ahead of or behind the beat. That opens the door to rhythmic ducking patterns and off-beat motion, especially with noisy input and the Maximize knob pushed up. KVR Audio’s product page says Shatter Delay includes a Choke parameter and Euclidean pattern control, while Headspace Reverb also gets the choke treatment, which makes the standalone version feel expanded rather than stripped down.

The new plugin also gives Battalion’s internal design a wider audience. Plugin Alliance describes Battalion as a hybrid synth-and-sample drum machine with 1,000-plus high-quality samples, 20 distinct synthesis engines, a graphic sequencer and a performance mode for live triggering and manipulation. BattleFX pulls the most distinctive parts of that system into a free tool, making those same effects available for drum buses, percussion loops, synth parts or full mix processing without requiring the full instrument.

Coverage of BattleFX landed in mid-May 2026, and the release fits a familiar pattern in music software: extract the most-loved pieces of a flagship instrument and let them live on their own. For drummers and producers building modern templates, that is the practical win here. The same effects that helped define Battalion now sit one insert away from a beat that needs more edge, more motion and more impact.