TechPowerUp published a review on the Quick Look: FiiO JD3 Black Edition In-Ear Monitors
A quote from the article:
FiiO has updated its wallet-friendly set of well-tuned IEMs to appeal to entry-level music lovers worldwide. The new JD3 Black Edition goes for only $20 and comes with a more balanced tonality from an updated 9.2 mm dynamic driver paired with a semi-open acoustic chamber and an all-aluminium unibody construction for improved build quality. You even get an integrated microphone with line controls for the great price!Quick Look: FiiO JD3 Black Edition In-Ear Monitors Review