Note: My qdc Neptune review was originally posted in Czech at AVmania.E15.cz, this is my modified English version. English is not my native language and this is also my first review for Head-fi, so please be merciful to any of my mistakes. Link to original review: https://avmania.e15.cz/qdc-neptune-povedene-spunty-s-unikatnim-vzhledem-test What is qdc? qdc, or officially Shenzhen Qili Audio Application Co., Ltd., is Chinese manufacturer of custom and universal IEMs. Even though their presence internationally and on Head-fi is limited, they are...