The main use of the module is to send MIDI from one TRS input to five outputs (this is the ‘common Thru’ function).
In addition there is a second MIDI input which will merge MIDI data to the 5 outputs.

More goodies:

• TRS MIDI inputs accept type A and B (no setup required)
• 5 TRS MIDI outputs + 2 rear outputs on pin header
• Swap type A to B for every output from the front panel (no fragile mechanical switches)
• Merge input (with hardware bypass if zero latency is required)
• MIDI Clock to analog sync outputs signals:
  • 1 pulse per step
  • 2 pulses per step (Korg / Teenage Engineering)
  • DIN SYNC
  • Start / Stop / Reset
• MIDI inputs and outputs can handle +/- 10V Eurorack voltages.
• 2 HP
• DEMO VIDEO

This is an output module that can drive headphones. Two additional mono inputs are mixed with the output.

• Left input is normalled to the right input.
• 2 additional mono inputs with dedicated level potentiometer.
• +4 dBu peak detector led (professional line level).
• Rear pin-header connector with pre-fader signal output.

• INPUT 1 feeds OUTPUT 1 through 6. If a jack is plugged into INPUT 2, INPUT 1 will supply OUTPUT 1 through 3, and INPUT 2 will supply OUTPUT 4 through 6.
• The two-color LED indicates the polarity and activity of the signal applied to INPUT 1 only. (red is positive, green is negative).

Please note that the opamp model used is TL072. Accuracy will not let you drive many oscillators in perfect unison. No problem for audio / modulation / clock signals.