I've used them to daisy-chain TC Helicon voicetone singles.
A great solution instead of the €40+ kit from TC Helicon.
It would have been better to have NEUTRIK connectors, but not necessary, since it in almost all applications it shan't be fiddle with too much.
If you are using it for similar applications, I recommend coupling it with the the the sssnake DC3 Cable for power distribution and the sssnake SK233-0,3 XLR Patch . They work beautifully well for the Voicetone Singles series.
Recommended.