3 way mixer or passive attenuator

This module is a 3 input mixer, each input has a passive attenuator and a dedicated output, if something is plugged into the output, this output is removed from the mix.
All 3 inputs are mixed together with a master level control.
This module can be used as a 3 voices mixer, or 1 passive attenuator and a 2 voices mixer, or 3 passive attenuators.

• ? mA +12V
• ? mA -12V
• 0 mA 5V
• 12 mm Depth

No info about availability.