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BlueJeans cable in Seattle. I used to build my own cables, but by the time I ordered high quality connectors & cable and soldered it up, it cost me close to $50 per cable. They build custom cables for me for about the same as it what it would cost to do it myself. I have no business relationship with them other than being a long-time happy customer.
In fact, they just built me a cable for my Audeze LCD-2 headphones, which have unique 4-pin latching mini-XLRs at the headphones. Audeze wants $150 for a fragile cable that falls apart in a year or two. Aftermarket cables cost twice that and more. BlueJeans built one much higher quality than Audeze, for less than half the price.