4-voice analog synthesizer with Polyphonic Aftertouch Legendary Analog Sound, Reimagined Fourm delivers four genuine voices of Sequential analog sound, built on the legendary Prophet-5 voice architecture – right down to its envelope response curves. With dual oscillators offering simultaneous wave selection and a classic 4-pole low-pass filter, now enhanced with bass compensation, Fourm captures the warmth and punch that shaped a generation – and takes it to the next level. A New Fourm of Expression Fourms 37-note slim-key keyboard features polyphonic aftertouch, unlocking expressive techniques like guitar-style note bends, solo voice swells, and other nuanced articulations – completely transforming the experience of playing a modern analog polysynth. Modulation You Can Touch Inspired by the Pro~One, Fourms top-panel modulation matrix puts deep sound design at your fingertipsno menu diving required. Route sources and destinations with a button press, visualize connections with color-coded indicators, and build complex modulation paths in seconds. Its fast, intuitive, and designed to keep you in the creative flow. Fourm\’s Features 37-note slim-key keyboard with polyphonic aftertouch Warm and organic, 100% analog signal path Intuitive, welcoming knob-per-function layout Pro-One style top-panel modulation matrix Prophet-lineage resonant filter with bass compensation Arpeggiator with sequencer mode 128 world-class presets Pro-quality, all-steel chassis SYNTHESIS All oscillators have simultaneously selectable waveforms LFO too Oscillator B supports low frequency modes Classic Prophet-style Sync 4-Pole resonant lowpass filter Feedback with aggressive drive circuit 2 ADSR envelopes Sequencer supports glide per step IN/OUT Main output mono (1/4 jack) Headphone output mono (1/4 TRS phone jack) MIDI in, out, and thru ports USB for bidirectional MIDI communication Footswitch/expression pedal input POWER Separate power switch 12V DC 1.2A power supply, center-positive (included) Can be plugged into an AC outlet capable of supplying from 100 V to 240 V at 50 Hz/60 Hz. 14 Watts maximum power consumption. PHYSICAL SPECS 22.13\” L x 9.88\” W x 2.75\” H (56.2 cm x 25.1 cm x 7.0 cm) Weight: 8.76 lbs. (3.97 kg) Anti-theft slot