The price of an amplifier or loudspeaker is pretty well fixed at the cost of materials. Again, who is making money rebadging a Korean 4K amp and selling it for 600$? The "company" who slaps their brand name on it might see 50$ profit per amp after all is said and done, the buildhouse probably makes less still; everything from the aluminum heatsink to electronics components (transistors, resistors, caps, transformers) is pretty much a commodity so likely whoever is making all that is operating on very slim margins. The only really evolving technology is the class D chips and op amps which by and large aren't game changing and I suspect you're getting in newer amps.
Loudspeakers the same. The cost of steel, magnets, paper, rubber, and copper/aluminum hasn't changed at all. The only savings we saw there was to cut out the first world manufacturing (labor and overhead) cost to be replaced by shipping costs which all throughout the industry probably add up to a significant portion of the price tag on anything.
This isn't cell phones or a laptop where you get dramatic gains in speed or space every year. In fact the closest thing to that is head units which by and large are incredibly cheap today for what they do and every year bare bones models do more and more.
So tell us, who is being "greedy" here and making all this money off of this stuff? What great technology is being held back from us due to greedy corporations?
As far as why Brazil, why not? They're third world so labor is cheap and they have a fair bit of local demand. They're not making a full bridge amp any cheaper than China or Korea could. Call up an engineer and get them to design a full bridge amp for you and shop out the design to a Chinese buildhouse and I bet you can sell them cheaper than Brazil can at the same quality. Those amps are cheap because they use a small heatsink and few components not because whoever owns those companies is benevolent and giving away amps.
So what is it that you feel you're being cheated out of or paying for and not getting? Particularly after you admitted that you aren't actually willing to pay for first world engineering or manufacture. I'm very confident that there's engineers who can do a whole lot if you had the money but your being willing to pay gutter prices for what they create today 5 years from now when China steals their designs doesn't give them a lot of incentive to develop and prototype things today.
