Jomox Mod FM – 8-Voice Eurorack FM Synthesizer The Jomox Mod FM is a fully self-contained 8-voice FM synthesizer in Eurorack format. Combining a digital FM engine with true analog filters, VCAs, and modulation capabilities, the Mod FM bridges the gap between classic FM synthesis and analog warmth. With 4 operators per voice, 2 LFOs/VCOs, and full multitimbrality, the Mod FM delivers everything from metallic FM tones to snappy techno percussion and lush, analog-style textures. Each voice is fully independent with its own CV/Gate inputs, dedicated output, analog filter, and VCA, making it one of the most flexible FM synths available in Eurorack. Key Features 8 voices, each fully multitimbral 4 operators per voice with full modulation matrix (26 algorithms) ADSR envelopes per operator, frequency modes (key-tracked or fixed Hz) 2 LFOs per voice (64 waveforms), switchable into full audio-range VCOs Dedicated analog filters per voice (SSI2140 – modern SSM2040 design) 24 dB low-pass 12 dB multimode LP/BP/HP with continuous crossfade (shape) True analog VCAs per voice for snappy response Metal Noise generator for extra percussive/experimental textures FX engine: stereo reverb + 2x delay (syncable via MIDI clock; includes flanging-style micro delays) Matrix interface with 16 endless encoders + dual OLED displays for fast editing Connectivity & Control CV/Gate per voice CV modulation inputs for each operator Dedicated outputs for each voice + stereo mix out (odd/even split) MIDI I/O (TRS Type A) and USB-C (MIDI over USB) Full storeability of sounds, including CV amounts 128 presets + 118 multi sets (multi mode = independent voices with individual sounds) Specifications Sound Engine: Hybrid FM (digital operators + analog filters/VCAs) Operators: 4 per voice, arranged in full modulation matrix Algorithms: 26, derived from DX9 architecture LFOs/VCOs: 2 per voice, 64 waveforms, switchable to audio range Filters: SSI2140 per voice, 24 dB low-pass + 12 dB multimode Envelopes: ADSR for operators + filters FX: Stereo reverb, dual delay (MIDI-sync) Displays: 2× 128×64 OLED Presets: 128 Multis: 118 Power: +12V 370 mA / –12V 170 mA (≈ 6.5 W total) Dimensions Width: 56 HP (≈ 284 mm) Height: 3U (≈ 129 mm) Depth: 40 mm
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