I use this cable to feed small monaural synths to a mixing console. So stuff like Volca Kick, Volca Bass, meeblip Geode (Summed Mono), but NOT stuff like Volca FM or Teenage Engineering OP-1, which employ unbalanced stereo.
There can be some confusion going from mini-jack to a balanced input, should the Mini-Jack be TS or TRS? Should the Large jack plug be balanced or unbalanced? (If you use the wrong cable the signals can cancel out in the case of summed mono, and some cables are wired differently with the tips and sleeves)
If you have an XLR input on your interface or mixing console, and one of these summed-mono headphone out modules, you can use this cable without having to worry about all that stuff. No risk of buzz or missing the ground, clear as hell, solid cable, end of story!
As always, Cordial delivers on tank quality.