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Technical Specifications

An Overview of the S4 Specifications​

  • Processor: Quad-core 1.5 GHz
  • Internal Memory: 4 GB (expandable via USB)
  • Display: 3.5” TFT LCD display
  • Audio Processing: 24-bit / 48kHz stereo
  • USB Audio Interface: Class compliant, 10 in / 10 out
  • Enclosure: Matte black aluminum
  • Interface: 21 tactile RGB buttons, 9 endless encoders
  • Dimensions: 242 x 156 x 39 mm (9.5” x 6.1” x 1.5”)
  • Weight: 820 g (1.8 lbs)
  • Inputs: 2x 6.3 mm (1/4”) jack
  • Outputs: 2x 6.3 mm (1/4”) jack, 3.5 mm TRS headphone
  • MIDI: 3.5 mm TRS (Type A) in/out
  • Sync: 3.5 mm analog sync in/out
  • USB-C Port

Electrical Specifications​

Audio Outputs

  • Main Outputs Level: +4dBu peak
  • Output Impedance: 94Ω unbalanced

Headphone Output

  • Headphones Out Level: -4dBu
  • Output Impedance: 94Ω

Audio Inputs

  • Input Level: +4dBu peak
  • Audio Input Impedance: 20kΩ

Sync Input

  • Input Level: +13dBu peak (0-10V)
  • Input Impedance: High-Z

Sync Output

  • Output Level: +7.2dBu peak (0-5V)
  • Output Impedance: 3.3kΩ