One thing no one mentions since they only just got their freshly molded IEMs is the maintenance. You have to be careful to not get ear wax inside them. That me

One thing no one mentions since they only just got their freshly molded IEMs is the maintenance. You have to be careful to not get ear wax inside them. That means cleaning them a lot more frequently than any regular in-ear headphone. Eventually I bought the hearing aid vacuum (it uses a needle, and pumps through a filter to suck out the wax) for $100 to be able to reasonably maintain my IEMs after a $300 cleaning from the manufacturer. That said I’ve had my same IEM for around a decade and they still sound amazing.