FiiO's latest Beryllium-Plated Single Dynamic Driver IEM- FD1 is now available globally!



In March 2019, we met a new friend, beryllium-plated diaphragm, from the FH7-the 4 Balanced Armature 1 Dynamic Driver IEM. It gets out from the metal family as the attractive earphone material due to its outstanding specifics, 4 times more rigid than steel, 3/4 lighter than titanium with the sound velocity up to 12KM/s. Now, the beryllium-plated diaphragm is again adopted to FiiO dynamic earphones. This is FiiO's first beryllium-plated single dynamic driver IEM, FD1.


With the dynamic unit adopting a high-end beryllium-plated diaphragm, the FD1 brings you a sense of movement and power, shaping majestic sound performances. What's more, the driven capacity is also a good helper. The dynamic driver is designed with an N50 two-way magnetic circuit, having a 55% magnetic flux promotion and nearly 1 Tesla of magnetic field intensity compared with the traditional single magnetic circuit. The double magnetic flux activates forceful driven capacities that enable energetic, robust bass performances and even full and delightful transient responses.


In terms of the tuning style, the beryllium diaphragm coupled with a two-way magnetic circuit design allows improved bass acoustic pressure and deeper bass explosion. Plus FiiO patented balanced pressure relief technology, the pressure is able to keep in a balanced state after precise counting and adjusting. All of these features ensure non-distortion for large dynamics, natural and elastic bass. In a word, the FD1 is easy to drive yet with great compatibility.


Key features of the FiiO FD1 include:

* Beryllium-plated dynamic driver

* N50 two-way magnetic circuit

* Balanced pressure relief technology

* Unique celluloid faceplate

* 4-stranded high-purity monocrystalline copper cable

* 0.78mm 2-pin connectors

* Strong bass

* Hi-Res Audio Certification


To find out more about the FD1, please visit the product page on