Analogue Solutions has announced a second batch of the Filtopia, a limited-edition stereo analogue monosynth that sold out its initial run of 50 units within days of its first announcement. The instrument is built around a bank of five parallel analogue filters, a configuration that sets it apart from most monosynths on the market and opens up multi-band filter sweeps and vocal formant-style sounds that a single filter simply cannot produce.

The five filters trace their design lineage to the Oberheim SEM from 1974, adapted for Analogue Solutions’ own purposes. The first filter fades between low-pass and high-pass modes, the middle three are bandpass, and the fifth switches between bandpass and low-pass. Each filter has its own modulation assignments across two envelope generators and two LFOs, with velocity sensitivity on filters four and five. Three VCOs, a sub-oscillator, and a noise generator can be routed selectively across the filter array, letting different audio sources run through different filters simultaneously.

Stereo output comes from two separate VCAs, each with its own quarter-inch jack. Panning those outputs and adjusting the envelope settings on each produces wide, evolving stereo movement. An onboard solid-state delay handles the built-in echo section, feeding into the first VCA’s output path.

Additional features include a step-based CV sequencer with per-step pitch control, an external input matrix for routing other gear through the filter array, front-panel mini-jacks for Eurorack patching, and connectivity options for both classic hardware setups and modern DAWs. Pricing and exact availability can be found on the Analogue Solutions website.