Serpent Audio SB4001 – Stereo Bus Compressor w/ Quad VCAs (SEPIA Module)
The Serpent Audio SB4001 is a stereo VCA bus compressor designed specifically for the Karno SEPIA platform, combining classic mix-bus behaviour with modern control and tonal flexibility. Its quad VCA architecture delivers exceptional stereo accuracy and stability, while wide threshold and ratio ranges allow everything from subtle glue to assertive compression.
Engineered for professional hybrid and analogue workflows, the SB4001 integrates advanced sidechain filtering, stepped and adaptive release modes, internal parallel compression and optional harmonic drive. With its flat frequency response, true bypass switching, and ±16 V power rails, it offers transparent operation when required – or characterful impact when pushed – all within a recallable SEPIA module environment.











