I don't feel the OP's complaint is a fair one. The model he's referring to (the Triton 3+) has been discontinued, I believe as long ago as 2023. As the speaker's still under warranty, they are willing to repair it but I don't feel it's reasonable to expect the company to maintain a supply of replacement amplifiers for a product that's no longer available.
GoldenEar loudspeakers are an extraordinary value and one reason is how well the subwoofer section has been integrated into the design. Just spent some time with their latest, the T-44 floorstander and would recommend it highly.

