The 2hp Unity Mixer is a little powerhouse of unity gain mixing capability. 2 sets of 3 inputs (1 out per set) offers up your basic configuration, then hit the SWITCH button to allow for 6 total inputs (1 out). Unity Mixer also supports CV so the SWITCH button makes this module a great option for rerouting combinations of signals on the fly and is perfect for live performance!

2 sets of 3-to-1
SWITCH button for 6-to-1
Audio and CV signal support
2hp
Approx 20mA
15mm deep

http://malekkoheavyindustry.com/product/unity-mixer/

• 20 mA +12V
• ? mA -12V
• ? mA 5V
• 15 mm Depth

No info about availability.