Why do Fidelity Custom Earphones sound so incredible?

Why do Fidelity Custom Earphones sound so incredible?

Most in-ear headphones use a “collector” or “chamber” to collect the frequency bands, combine them and then channel them into your ears. These collectors create time alignment and phase coherency problems with the audio. Fidelity Custom Earphones sound mix chamber is your ears. Your brain assembles the sound for you, in time and phase coherently, like it has done for you since birth.