Duo Technical Specs

Technical specs

Dimensions

MOD Duo dimensions in mm

• length: 186 mm
• width: 160 mm
• height: 75 mm

Inputs and outputs

Audio

MOD Duo left side view showing the audio and headphone outputs.

• 2 independent inputs:
  • TS connectors
  • Input impedance 1 MΩ
  • Programmable Gain Amplifier: ± 12 dB Gain, 0.5 dB step plus a 32 dB gain stage for microphone
• 2 independent outputs:
  • TRS connectors (balanced compatible)
  • Volume Control: 0 to -127 dB, 0.5dB step
• Headphone output:
  • TRS connector
  • Digital volume control from +12dB to −33dB

Each input/output uses a TRS connector, a True Bypass circuit and has a LED whose color depends on the audio signal amplitude.

• signal < -30dB : off
• -30dB < signal < -12dB : green
• -12dB < signal < -3dB : yellow
• signal > -3dB : red

MIDI

• MIDI IN connector - DIN 5 pins - for musical instruments and controllers
• MIDI OUT connector - DIN 5 pins

USB

• USB HOST - USB 2.0 Standard-A type
  • USB Bluetooth
  • USB Wifi
  • USB MIDI
• USB DEVICE - USB 2.0 Standard-B type
  • USB Ethernet Adaptor
  • USB Mass Storage (used for updates)

Controllers

• 2 knobs with LCD screen
• 2 foot switches with color LEDs
• RJ-45 connector for additional controllers (see Control Chain)

Processors

• A20 CPU:
  • Dual Core ARM A7 1.0GHz
  • 1 GB RAM
  • 4 GB Flash Storage
• Audio CODEC:
  • Manufacturer: Cirrus Logic
  • DAC: 104dB dynamic range, -90dB THD+N
  • ADC: 104dB dynamic range, -95dB THD+N
  • 24 bit / 48 kHz AD/DA

Peripherals

• Arduino shield
• expression pedal
• extra foot switches

Software

The MOD Duo uses a linux operating system with LV2 plugins to define virtual pedal boards.