Atlas - Quad-Core Multimode Filter

The Vostok Instument Atlas (VCF) filter cores have been carefully designed and tweaked to be pristine without losing character. With three filter modes available per channel, 4p-LP, 2p-HP, and 4p-BP, Atlas can cover almost any filtering technique, from superb filter sweeps to multi-slope resonant patches.

Thanks to its precise resonance circuit, each core creates a clean sine wave when self-oscillating. Excite the inputs with fast trigger or gate signals, and you will get TR-like drum sounds, from deep kickdrums to nice toms and congas.

In addition, the module counts with a CV-controlled Interpolating Scanner circuit that morphs softly between each filter output, creating new shapes and timbres as it fades between the channels. 

Specifications

• Size: 16HP
• Current draw: +/-12V: 170mA, +5V: 0mA 
• Depth: 30mm (including power cable) 
• Input Impedance: 100kΩ 
• Output Impedance: 1kΩ
• CV Inputs Range: 10Vp-p
• Frequency Range: ∼ 20Hz to 20KHz

Atlas user manual - Vostok Instruments