solderdude
Grand Contributor
It is just a black(B in the suffix) Neutrik NJ3FP6C-BAG locking 6.3mm panel connector. I assume it was chosen because of its quality. It has silver-plated (AG in the suffix) contacts and costs around $ 9.-.
They are also available in free connectors (for cables) in black and silver.
They are also available in free connectors (for cables) in black and silver.