It is the same as cable/fuse/etc break in nonsense - self-serving bs from unscrupulous dealers.
Example
Buyer: I tried it I hear nothing I want money back
Seller: You need to give it 8 weeks to settle in.
(8 weeks later)
Buyer: I still hear nothing I want my money back
Seller: Try the other direction
Buyer: Ok I reversed it but I cant hear anything I want my money back.
Seller: You need to give it 8 more weeks be patient...
(8 weeks later)
Buyer: I cant hear anything I want my money back
Seller: We are making pink ones now, they are three generations better. I will send you one in return for the orange mark 42.56b model. We don’t do refunds after 90 days but I assure you that the pink ones are amazing - every one of my friends has posted excellent online reviews. Just give it 800 hours to break in.
Example
Buyer: I tried it I hear nothing I want money back
Seller: You need to give it 8 weeks to settle in.
(8 weeks later)
Buyer: I still hear nothing I want my money back
Seller: Try the other direction
Buyer: Ok I reversed it but I cant hear anything I want my money back.
Seller: You need to give it 8 more weeks be patient...
(8 weeks later)
Buyer: I cant hear anything I want my money back
Seller: We are making pink ones now, they are three generations better. I will send you one in return for the orange mark 42.56b model. We don’t do refunds after 90 days but I assure you that the pink ones are amazing - every one of my friends has posted excellent online reviews. Just give it 800 hours to break in.