The Vermona Action Filter 4 is an effects unit designed for live action and creative sound sculpting. It features two channels of 24 dB/octave filtering with separate high-pass and low-pass controls, plus two resonance controls and a TRIGGER button for on/off dynamics. For the first time, the unit provides both jack-format I/O in addition to the standard RCA connectors, making it suitable for studio or live setups. Technical highlights include two unbalanced inputs (2x TS and 2x RCA) and two unbalanced outputs (2x TS and 2x RCA). The device operates with a minimum input sensitivity of –16 dBu and a maximum input level of +22 dBu, with an impedance of 10 kΩ. The maximum output level is +15 dBu. It is described as an analog filter with a distinctive sound signature and a rugged design intended to withstand live performance. Typical use cases include live performance and studio routing where users want hands-on control without automation. The unit emphasizes manual frequency sweeping and rhythmic blending of the effect, relying on its responsive physical controls for a tactile sound shaping experience.
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| Connection | Direction | Connector |
|---|---|---|
| RCA, unbalanced × 2 | BIDIR | RCA |
AI synthesis of sourced user experiences
The author praises the Vermona Action Filter 4 for its unique, warm analog sound suitable for chill, funky, and house styles, noting its signature as distinctive and engaging in live use; however, they point out drawbacks such as no MIDI, RCA-to-Jack signal cut when both are used, and a price that may deter some buyers.
AI summary of a source review
The reviewer says the Vermona Action Filter 4 has a unique warm analog signature and is considered a high-quality filter, though with some drawbacks like no MIDI, limited I/O switching, and a price that may deter buyers.
AI summary of a source review
The reviewer says the Vermona Action Filter 4 has a unique, signature sound and is good for chill, funk, and related styles, noting its analog filter and live-use practicality, while acknowledging some drawbacks like no MIDI and a loud price.
Action Filter 4 is described as a ‘Proven creative tool for live applications’ that emphasizes manual control over filters rather than automation.
The unit offers 2x TS and 2x RCA unbalanced inputs, and 2x TS and 2x RCA unbalanced outputs, with a 1U, 19" chassis and 60 mm depth.
It includes both 2x RCA and 2x TS (unbalanced) inputs and outputs for easy integration in live or studio setups.
Vermont notes it is designed for live stage duty and includes a TRIGGER function for live breaks and a robust build for stage use.
There is a TRIGGER button to toggle the filter on/off, with a designed slew time to maintain timing when pressed during live performances.
The device lacks MIDI, and switching between RCA and jack outputs can cut the other signal; some users mention price and interface choices as drawbacks.
