FiiO LINK TWS Bluetooth Earhook Adapter for IEMs

The FiiO UTWS17, also known as LINK TWS, is a high-performance true wireless Bluetooth earhook adapter designed to turn compatible detachable-cable IEMs into wireless earphones.

Built for listeners who want wireless freedom without giving up their favourite in-ear monitors, the UTWS17 combines a flagship Qualcomm QCC5181 Bluetooth platform, Bluetooth 6.0 support and independent AK4333 DAC chips. Each earhook includes its own DAC and headphone amplifier circuit, helping deliver cleaner, more powerful sound than a basic Bluetooth adapter.

The UTWS17 supports a wide range of Bluetooth codecs, including SBC, LC3, aptX, aptX Adaptive, aptX Lossless, LHDC and LDAC. With support for high-resolution wireless transmission and Snapdragon Sound, it is designed for detailed music playback, video watching and low-latency use.

Power output is rated at L+R ≥85mW at 32Ω, giving the UTWS17 enough drive for a wide range of compatible IEMs. A high signal-to-noise ratio of ≥111dB and low THD+N of <0.002% help support a clean, low-noise listening experience.

The charging case uses a contactless wireless charging design for the earhooks, helping avoid exposed charging-pin oxidation and dirt build-up. The case also features a display for quickly checking earhook status, battery level and pairing information.

The UTWS17 is designed for everyday comfort, with each earhook weighing approx. 8g excluding the connected earphones. Physical button controls make playback, volume and track control easy, while the FIIO Control app unlocks extra functions including 10-band PEQ, channel balance and Hi-Fi/game mode settings.

The UTWS17 supports both MMCX and 0.78mm 2-pin IEM connections via swappable connector adapters, making it compatible with a wide range of detachable-cable earphones.

*Please note: IEMs are shown for illustration only and are not included.

Product Specifications

• Bluetooth chip: Qualcomm QCC5181 ×2
• DAC chip: AK4333 ×2
• Bluetooth version: Bluetooth 6.0
• Bluetooth codecs: SBC / LC3 / aptX / aptX Adaptive / aptX Lossless / LHDC / LDAC
• Battery life: Up to 20 hours total
• Earhook battery life: Approx. 7 hours in SBC mode / approx. 5 hours in LDAC mode
• Charging case: Provides approx. 2 additional charges
• Output power 1: L+R ≥55mW at 16Ω, THD+N <1%
• Output power 2: L+R ≥85mW at 32Ω, THD+N <1%
• Output impedance: <0.9Ω at 32Ω
• Signal-to-noise ratio: ≥111dB, A-weighted
• THD+N: <0.002%, 1kHz / -3dB / 32Ω
• Charging: Type-C charging case / contactless wireless charging for earhooks
• Connector support: MMCX / 0.78mm 2-pin swappable connector adapters
• Single earhook weight: Approx. 8g, excluding IEM
• Charging case dimensions: Approx. 93.1 × 71.1 × 34.2mm
• Water resistance: IPX4