HiBy W3 II Bluetooth 5.2 Headphone Amp & USB DAC

The HiBy W3 II is a compact Bluetooth 5.2 headphone amplifier and USB DAC that upgrades phone, PC, and car audio with CS43131 Hi-Fi decoding and support for high-resolution Bluetooth codecs.

If you want clearer detail, stronger dynamics, and flexible connectivity for earbuds or full-size headphones, the W3 II packs a proven DAC/amp chipset and modern wireless codecs into a pocketable unit. It works as a standalone Bluetooth receiver, an NFC-pairing headphone amp, a Type-C USB DAC dongle, and a hands-off car audio accessory. Controlled by the HiByBlue app, it also shows codec and sample-rate info, offers EQ adjustments, and receives firmware updates.

How does the W3 II improve headphone sound from a smartphone?

The W3 II bypasses a phone’s internal audio path and uses the CS43131 DAC/amp to deliver cleaner digital-to-analog conversion and more drive for headphones. Bluetooth 5.2 and support for high-resolution codecs like LDAC and HiBy’s UAT keep more audio detail intact over wireless links.

• CS43131 DAC for low-noise conversion and stronger output
• UAT and LDAC support for higher wireless sample rates
• Bluetooth 5.2 SoC for stable, lower-latency connections
• Dedicated app to monitor codec, sample rate, and EQ

Can I use the W3 II with my car or laptop?

Yes — the W3 II adapts to multiple environments. In cars it can auto-power and reconnect to your phone for a seamless audio link; on a computer it functions as a USB DAC dongle via its Type-C port, replacing a laptop’s onboard sound with a higher-quality external path.

• Car Mode: auto power-on and reconnect with vehicle ignition
• USB DAC Mode: Type-C acts as external sound card for PC/Mac
• NFC pairing option for quick phone connections
• Works with a wide range of headphones and IEMs

What wireless codecs and features does the W3 II support?

The device supports modern high-resolution Bluetooth codecs to preserve fidelity across a wireless link. It includes HiBy’s proprietary UAT codec with up to 192 kHz transmission capability plus industry standards like LDAC, aptX/aptX HD, AAC, and SBC for broad device compatibility.

• Hi-Res Bluetooth codecs: UAT (HiBy), LDAC, aptX, aptX HD, AAC, SBC
• Bluetooth 5.2 for improved throughput and connection stability
• NFC for one-touch pairing with compatible phones
• HiByBlue app support for codec readout and firmware updates

How do I control sound and monitor performance?

Download the HiByBlue app to view active codec, sample rate, and battery level, adjust EQ settings, and install firmware updates. The app makes it easy to tailor the W3 II to your headphones and listening taste without complicated manual menus.

• Real-time readout of codec and sample rate in the app
• On-device controls plus remote option via phone app
• Firmware updates delivered through the app for new features
• EQ presets and adjustments for tuning output to headphones

Who is this for? Audiophiles and everyday listeners who want a portable, versatile upgrade to phone, laptop, or car audio will get the most from the HiBy W3 II. It’s suitable for users who value higher-fidelity wireless streaming, need USB DAC functionality on-the-go, or want simple NFC pairing and app-based control. If you own quality headphones or in-ear monitors and want clearer detail, better dynamics, and flexible connectivity options, the W3 II is a compact and practical choice.