Does anyone know where I can find bulk 5 and 6 pin XLR (mic) cable in Thailand? Looking for 100m rolls similar to the photo below. Not looking for the 3 pin mic cable which is easy to find.

I see there hasn't been any takers.

I can suggest you call Khun Bell at Muang Thai Outlet (aka:molsound) - they're in Roi Et, but they are easily the biggest pro sound/visual retailer in the country... their showroom is several rai... I will PM you his phone numbers. Pretty sure he speaks English, as he was educated in US.

If they don't have it, I'm pretty confident no-one does.

First floor at Zeer Rangsit has a big shop specialized in professional sound equipment. They also sell a lot of cable in bulk. Not sure if they sell your specific kind of cable but worth a look. Sorry no contact details, just saw it when browsing the mall.