Seiche Complex Filter + Waveshaper (Black)

Holocene Electronics Seiche

Holocene's Seiche is a dual-channel filter for tone shaping, distortion, dynamic filtering, and feedback exploration, all packed into 16HP of sonic opportunity. Each channel pairs a classic 2-pole OTA-based state variable filter (selectable between lowpass, bandpass, and highpass) with a built-in wavefolder, immediately positioning Seiche not just as a sculptor, but as a source of its own. The inclusion of ping inputs and switchable AM/FM normalization between the channels means you can push it into LPG territory, dial in percussive pings, or generate intense modulated textures without needing a dozen extra cables. Whether used to add subtle character or to mangle signals beyond recognition, Seiche invites tactile exploration and rewards it with harmonically rich, dynamically reactive results.

Seiche Features

• Dual-channel 2-pole state-variable filters (LP/BP/HP)
• Integrated wavefolders on both channels
• FM/AM normalization toggle between channels
• Ping inputs for LPG-style response and percussive behavior
• Complex audio processor and dual voice core in 16HP