Duo X Technical Specs

Technical specs

Dimensions

• length: 188 mm
• width: 163 mm
• height: 63 mm

Processors

• RockChip RK3399 CPU:
  • CPU family: ARM A72 + A53
  • Platform bit depth: 64 bit
  • Cores Clock: 4 x 1.4GHz + 2 x 1.8GHz
  • Memory: 2 GB RAM
  • Flash Storage: 16 GB

Inputs and outputs

Audio

• 2x independent audio inputs with:
  • independent multi-stage per channel;
  • TS connectors;
  • Input impedance 1 MΩ
  • Programmable Gain Amplifier: ± 12 dB Gain, 0.5 dB step plus a 32 dB gain stage for microphone.
• 2x independent audio outputs with:
  • TRS noise cancelling;
  • TRS connectors (balanced compatible);
  • Volume Control: 0 to -127 dB, 0.5dB step;
  • 24 bit Digital Audio convertion Bit Depth.
• Headphone output:
  • 6.35mm TRS connector
  • Digital volume control from +12dB to −33dB
• SPDIF output:
  • 3.5mm TS connector
• Cirrus Logic low noise audio AD/DA converter

Each input/output uses a TRS connector, a True Bypass circuit, and has a LED whose color depends on the audio signal amplitude. Learn more about the Duo LED indicators here and for the Duo X here.

Control Voltage

• 2 CV input ports
  • Togglable to CV Expression (you can use this input to connect one expression pedal)
  • Stereo 6.35mm TRS connector
• 2 CV output port
  • Stereo 6.35mm TRS connector

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
• 4 push buttons switches with color LEDs
• RJ-45 connector for additional controllers (see Control Chain)

Plugin Control

• 2x endless knobs
  • 3 parameters can be assigned to each of the endless knobs
• 8x knobs
  • 3 parameters can be assigned to each knob
• 4x pushbuttons
  • 3 parameters can be assigned to each pushbutton

Peripherals

• Arduino shield
• expression pedal
• extra foot switches

Software

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