HiBy W4 – Portable HiFi Bluetooth Headphone Amplifier
₪370
Dual-Core Dual-Mode DAC & Bluetooth Receiver
- Qualcomm QCC5181 Bluetooth 5.4 Platform
- Full Hi-Res Bluetooth Codec Support
- Dual CS43198 DAC Architecture
- UnCharge Mode for Cleaner USB Audio
- 2-Inch Full-Color Touchscreen
- 3.5mm SE & 4.4mm Balanced Outputs
- Femtosecond-Grade Clock System
- Detachable Clip & NFC Pairing
























The HiBy W4 is a unique-looking little Bluetooth DAC amplifier with an analog style and a mildly euphonic sound signature that is neither technical nor analytical.
The sound is not the smoothest or the highest resolving, but I like its slightly bloomy midrange, extended, airy treble, and spacious soundstage, making it easy to enjoy the music.
The HiBy W4 is a superb value and one of the most technically impressive Bluetooth DAC/amps anywhere near its price. It isn’t perfect—the developer mode requirement and UX quirks demand patience—but once configured properly, it delivers sound quality that rivals devices costing several times more.
The W4 quite literally shines in the aspect of sound. Especially if you are a lover of clarity, cleanliness, sonic transparency, and you don’t “need” extra bass coloration. If “neutral-natural” is your go to and you want to provide your iems/headphones with a clean canvas to play from, then the W4 is going to be a surefire hit. Even in Bluetooth Mode I don’t hear any digital compression or narrowing of the sound field. I think this is one of the huge reasons for me that I enjoy the W4 so much. There really isn’t a huge loss in fidelity in comparison to USB Mode. However, when in USB Mode the W4 is a bona-fide stud of a dongle dac. Again, a very clean sounding device which presents my iems in a very dynamic and crystalline way. Again, at $99 the Hiby W4 is a no-brainer of a device.

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