Let's talk about the construction. The plug is made of a gold plated banana plug with two tiny screws for the speaker cable to be plugged into, two small screws to hold the cable sheath in place. Essentially, the screws serve to pin the audio cable to the banana plug and is your transmission path between conductor (cable) and terminal (banana plug). The problem is that only one side of the audio cable is making good contact, the screws are not a good conducting surface hence not a reliable or solid connection for the entire conductor. Ideally all strands would have a solid connection so the signals has the same impedance as it travels through the conductor.
I think that's server dependant. I make a lot of Golems, but the price on my server is high enough that you could buy all the living steel and still make about 20K (almost 200kg on AH). Its just that you proc all the way up the chain. You proc 20% of your trillium, and then 20% of your living steel. SoH and Ghost Iron are such low effort farms, too. 20% of 180 Trillium Bars at 500g is 18k more profit, 20% of 150 Living Steel at 3500g is another 105kg. That's an extra 25k profit per Golem. If they stop selling stockpile them for the next expansion, they always boom with the price of herbs. And a consistent 20% proc rate is the opposite of RNG, its extra free stuff as a benefit to completing an extra quest (not to mention for new alchemists the investment of leveling Vanilla Alchemy). You're looking for some get rich quick scheme, where the real way to build wealth is patience and volume. No market is going to be viable because you want it to be. Only because you make it viable.