HiBy W4 — Bluetooth Headphone Amplifier & USB DAC | LDAC, aptX Lossless, DSD512

HiBy W4: Portable Hi‑Res Bluetooth Headphone Amplifier & USB DAC

Meet the HiBy W4, a compact, feature‑packed two‑in‑one that brings a flagship audio chain to your pocket. It switches instantly between Bluetooth and UAC USB DAC modes, so you can connect to phones, tablets, computers, or dedicated players with minimal setup. The result is a streamlined listening experience that adapts to your day, whether you’re commuting, traveling, or relaxing at home.

High‑resolution wireless and wired decoding

The W4 supports Bluetooth 5.4 and a broad range of high‑fidelity codecs, including LDAC, aptX Lossless, aptX HD, and Snapdragon Sound. This setup aims to deliver stable, wide‑band audio with low distortion. An external microphone input, CVC noise cancellation for clearer calls, and NFC one‑touch pairing add convenience to everyday use.

• Broad codec support enables rich wireless playback on compatible devices.
• NFC pairing saves time and simplifies setup for on‑the‑move listening.
• External mic input expands voice and video use cases with clearer calls.

USB DAC performance and flexible power

For wired listening, the W4 supports UAC 1.0 and 2.0, decoding up to DSD512 and PCM 768kHz/32‑bit. It includes a physical charging lock and a power‑follow mode, letting you choose between internal battery and host power, with automatic car power sync for true plug‑and‑play use.

• DSD512 and PCM 768kHz keep audio faithful to the original recording.
• Flexible power options support on‑the‑go listening and car use.

Control, outputs, and tonal customization on a bright 2‑inch touchscreen

The 2‑inch display provides album art and track details in Bluetooth mode, while three gain levels, adjustable channel balance, four digital filters, and multiple EQ presets let you tailor the sound. The device offers 3.5mm single‑ended and 4.4mm balanced outputs with up to 475mW of power.

• Intuitive UI speeds up playback and volume tweaks.
• Two outputs cover most headphone configurations with ample power headroom.

Safety, portability, and design notes

W4 emphasizes safe listening with a volume lock and a 15‑level volume limit (expandable to 30 in developer mode). A real‑time sampling rate indicator stays visible even with the screen off. A rear clip keeps the unit secure on clothing or a bag, and there is an optional magnetic backplate for flexible mounting.

Real‑world use cases

Whether you’re on a commute, in a cafe, or winding down after a long day, W4 offers quick, reliable pairing, robust high‑resolution wireless codecs, and flexible wired connectivity. It’s designed to be portable, stylish, and capable of revealing nuanced detail across a wide range of formats.