FiiO FD3 PRO Earphones in-Ear Earbuds High Resolution 1DD Deep Bass Detachable MMCX Connector with 2.5/3.5/4.4mm Plugs DLC Black

Product Information

Packed with a single 12mm Berrylium-coated DLC diaphragm, a front acoustic prism, and a semi-open acoustic design, the FD5 looks like a high-end version of TinHifi T2 and T3.

It seems while most manufacturers are trending the opposite way and charging a premium for minor tweaks and advancements to their previous offerings. The treble range of the FiiO FD3 is more highlighted and detailed especially when you use the black sound tube that increases the treble response. Female vocals are also quite well-done, being properly energetic yet without any sibilance or harshness.Bringing down the treble emphasis, this forwards the mid range and bass presence balancing out the sound and tonal qualities and that is what I am hearing from the FD3. While both the FD3 and FD3 Pro have the same cavity design and structure, the only difference between both pairs is the included cable.

Bass is more extended and linear with the Aria, less punchy but with cleaner rumble and more natural resonance as well as less mids bleed. Pick the large inner diameter tube (black) for detailed treble, and choose the small inner diameter tube (red) for robust bass. The semi-open design of the FD3 Pro on FiiO's patented technology for balanced air pressure within brings several advantages.The cable has a nice braided design and features a fairly soft insulation that shows a very low amount of microphonic effect. By far their best balanced tuning using the balanced filter but the longer I was using the FD3 I realized the new FD3 is much more versatile than what is presented with the tuning nozzles.