Neutrik NJ3 FP-6-C

These connectors are not great, and sadly there doesn't seem to be any alternatives (at least at Thomann) for 6,3mm D-Type connectors. I have two main complaints with these connectors:

1. The locking mechanism is way too stiff. It's completely unnecessary (IMHO) and just makes it hard to pull the cables out. It takes a lot of force both to press down on the ejector button and to pull out the cable (which probably isn't great for the cable).
2. I get weak signals with these connectors; the audio sounds fine but is about -20dB quieter than when connecting directly to the sound interface. Yes, there's a chance that this is due to my soldering, but I doubt that's the issue. Even so, I'd avoid these connectors due to the locking issues alone.