I use it to connect my amplifier speaker (because it has a small cable) to a larger speaker cable that goes to the attenuator, I have absolutely no connection problems - no unwanted noise - no disconnection in the circuit - of course we are talking about neutrik so there is no mistakes
This is a great accessory for coupling stereo or mono cables! It also locks the cables attached to it so they will not get detached by mistake. A bit pricier than some alternatives but the quality is of course better. Recommended.