AJH Synth / Gemini 2412 Dual SVF black

Featuring two independent Vintage SEM-style filters, the central mixing bus supplies voltage for both audio and frequency control, allowing the two VCFs to be combined in both serial and parallel modes. Combining the two VCFs enables versatile applications like a 24dB SEM filter or a vocal formant filter!

Both filters are based on vintage SEM filters, utilizing FET transistor buffers and featuring low-pass, band-pass, and high-pass outputs, plus a convenient Vary output that fades from LP to notch to HP. All outputs can be used simultaneously.

We've added exciting features not found on the original SEM filters: CV control for resonance, overdrive for the VCF core, and full self-oscillation!

Each VCF1 and VCF2 has a 4-way switch to select LP, BP, HP, or VARY for the mixing bus.

■Specifications
・Variable dual filter
・Two identical channels based on the classic SEM filter
・Fade filter characteristics
・Low-pass, band-pass, high-pass outputs
・Common frequency control voltage input for both filters
・Switchable parallel/series operation
・Width: 28 HP