I dare say Linn have things much more automated when producing their own plinths.
I think they make all their own speaker cabinets and plinths but couldn’t be sure, they hadn’t used to, but I think they have done for the past few years, I may be wrong. They are pretty well versed in CNC having Castle Engineering as a sister company since their inception.I very much doubt that Linn do any woodworking - why would they? The plinth here from the mid 80's, is stamped by the Sheffield maker on the inside.
Getting more mechanised than in the video would require volume, and that would mean robots could be used as much as anything else. So far as the tooling goes in the video, all of that used can be bought moderately cheaply by a DIYer, albeit at a less robust/professional use build level. Only the spindle moulder would be an unusual DIY machine - most people use a chunky router in a router table.
Good video though - I learnt of Trend dominoes too - Lord alone knows what the cutter is in the tool though - deep, narrow pockets to take the dominoes - very neat, and useful. The same idea as biscuits, but biscuits are just ovals and the cutter is basically a tiny circular saw blade, cutting several mm into the timber to form the pocket.
Oh they definitely spend some money on materials and workmanship, they make and finish all of their own metal case work, the only things they outsource are PCB etching (that is a pretty specialised process, especially with multi layer and through plated boards), cartridge manufacturing and drive unit manufacturing... I don’t necessarily like the way they do business these days, customer support for legacy products leaves a little to be desired, but I will say, you get what you pay for with a new product.Maybe that is another reason that Linn kit is pricey? LLOL
Woodworking tooling - practice on some cheap softwood. The beauty of the video is that it shows the order to do things - very frequently not at all obvious until you have gotten too far to do it right
Oh, and measure twice, cut once!!! Cutting something shorter is easy, cutting something longer is tricky.
The Trend domino jointer is actually a router in a biscuit jointer body, BTW - I was curious enough to search. It routes slots rather than cutting them in one plunge action as does a biscuit jointer.