FiiO JD1 Type-C In-Ear Headphones

FiiO JD1 Type-C In-Ear Headphones with Built-in Hi-Res DAC and 10mm LCP Driver

The FiiO JD1 is an in-ear monitor built around a 10mm dynamic driver with a liquid crystal polymer (LCP) diaphragm — a driver material FiiO originally developed for its flagship models. This Type-C version adds something most earphones at this level leave out: a Hi-Res DAC and DSP built into the cable itself, so the earphone handles its own digital-to-analogue conversion instead of relying on whatever a phone or a cheap dongle provides. Each earpiece weighs about 7 grams, and the cable detaches on standard 0.78mm 2-pin connectors, so a worn cable never means replacing the whole earphone.

Key features

• 10mm dynamic driver with LCP (liquid crystal polymer) diaphragm
• Built-in Hi-Res DAC in the Type-C cable, decoding up to 96 kHz / 24-bit
• Five switchable sound presets stored in the cable’s DSP
• Detachable oxygen-free copper cable on 0.78mm 2-pin connectors
• About 7 g per earpiece for long, fatigue-free listening sessions
• In-line microphone and remote for calls, volume and playback control
• Aluminium alloy sound nozzle with balanced front and rear cavity design

Why a DAC in the cable matters

Most phones sold today have no headphone jack, and the inexpensive USB-C dongles people pair with them often use basic converter chips that add noise and cap audio quality before the signal ever reaches the driver. The JD1 Type-C moves that conversion into its own cable: the digital signal leaves the phone’s USB-C port and goes straight into a dedicated Hi-Res DAC, which decodes up to 96 kHz / 24-bit audio and feeds the driver a clean analogue signal. It also means the JD1 sounds consistent across phones, tablets and laptops, because the conversion hardware travels with the earphone rather than changing with every device.

Five tunings, switched from the cable

The DSP in the cable stores five sound profiles: Default, Powerful Bass, Treble, Vocal and Harman Reference. Pressing the volume up and down buttons together cycles through them — no app, no digging through phone settings. Powerful Bass adds weight for electronic and hip-hop, Vocal brings singers forward for podcasts and acoustic recordings, and Harman Reference offers a measured, neutral starting point. It is a practical way to learn what kind of sound you actually prefer before spending more on a second IEM.

Sound character and fit

The tuning is energetic: firm, textured bass that stays clean, vocals that come through clearly, and a treble range deliberately smoothed off so long sessions do not turn harsh or tiring. The front-and-rear cavity design balances air pressure in the ear canal, which helps bass control as much as comfort. At roughly 7 grams a side, with a selection of ear tips in the box, the JD1 sits lightly enough for commutes, office hours and desk listening alike.

For anyone stepping up from bundled earbuds or a basic Bluetooth set, the JD1 Type-C is a complete wired package — driver, DAC and tuning options in a single cable, with nothing extra to carry and nothing to charge.