Knif Audio is a Finnish pro audio manufacturer founded in 2005 by Jonte Knif and based in Helsinki. The small team designs and builds mastering-grade studio equipment by hand, using Elma rotary switches and high-spec mechanical and electrical components. Many units are made to order, with typical delivery times of one to three months.

The product line is centered on mastering and high-end tracking tools, including the Soma equalizer, the Sora saturation/distortion unit, the Solmu compressor, the Eksa equalizer/filter, the V804 microphone preamplifier, the Aski phono preamp, and a dedicated mastering controller. The company also offers a microphone and a line of audio plug-ins distributed through Plugin Alliance, which adapt some of their hardware designs into software form.

Knif Audio occupies a niche typical of boutique Scandinavian pro audio builders, with a reputation among mastering and mixing engineers for transparent equalization and distinctive harmonic coloration. Their hardware is sold through specialist pro-audio retailers such as KMR Audio and Retrosonic Pro Audio rather than through mass-market channels.

Knif Audio has 5 products cataloged on Equipboard, including Effects Processors and Synth Plugins. Their gear is featured by 3 artists, with the strongest followings in Electronic and Stage & Screen. Notable users include Junkie XL, Cazzette, and Hannes Bieger.