9. Power demand for the front-end device and burn-in demand

Does the FD11 need to be driven by a device with high output power?

The FD11 is designed to perform healthy and impressive sound even when driven by devices like a mobile phone. When connecting with a high-output-power USB dongle or Bluetooth DAC/Amp, the FD11 will have more superior sounds.

Does the FD11 need to be burnt in?

The FD11 sounds pretty good on the first listening. But the characteristics of the vibration system of dynamic IEMs will be changing during use. After 100 hours of listening, it will have better sound performance, so what we need to do is to use it normally.