Ensoniq ESQ-M - Overview & Features

The ESQ-M combines digital waveforms with analog filters, producing warm, evolving sounds that made it a favorite for synthwave, electronic, and ambient music.

✅ Hybrid architecture: Digital oscillators + analog filters
✅ 8-voice polyphony with 3 oscillators per voice
✅ Wide range of waveforms for thick, textured sounds
✅ Extensive modulation options with 4 LFOs and 3 envelopes
✅ MIDI control for full external sequencing

Key Specifications:

• Polyphony: 8 voices
• Oscillators: 3 digital oscillators per voice, with 32 waveforms
• Filters: Analog 24dB/oct low-pass filter (Curtis CEM 3379 chip)
• Modulation:
  • 4 LFOs with multiple wave shapes
  • 3 Envelopes (filter, amplitude, pitch)
  • Modulation matrix for deep sound design
• Memory:
  • 40 factory presets + 80 user patches
  • Expandable with cartridges
• Sequencer: None (unlike ESQ-1)
• Outputs:
  • Stereo 1/4" outputs
  • MIDI In/Out/Thru
• Display: LED screen for patch editing
• Rack Size: 2U rackmount
• Power: Internal power supply