HiBy W4 Bluetooth Headphone Amplifier USB DAC, BT 5.4 & review
Quick take
The HiBy W4 combines Bluetooth 5.4 (with NFC one-touch pairing) and USB DAC output in a pocketable headphone amplifier with a 2-inch touchscreen. It appeals to shoppers who want both wireless convenience and wired flexibility (including balanced 4.4mm and 3.5mm outputs), but buyer-review evidence suggests Bluetooth reconnection and media control behavior can be hit-or-miss, and output power may disappoint for high-impedance headphones.
Pros and cons
Pros
- Switches between Bluetooth and USB DAC modes for use with phones, computers, tablets, and digital audio players.
- Supports high-resolution audio codecs wirelessly (including LDAC and aptX Lossless) and ultra-high-resolution playback specs up to DSD512 and PCM 768kHz.
- Has both 3.5mm single-ended and 4.4mm balanced headphone outputs, plus multiple gain levels and EQ/filter options.
- 2-inch touchscreen shows album artwork and track information during Bluetooth playback, plus a real-time sampling rate indicator.
Cons
- Some buyers report unreliable Bluetooth reconnection and buggy media resume/controls that can interrupt normal listening.
- There are complaints about limited loudness or output power with high-impedance headphones.
- Battery-saving behavior (auto shutoff after pause) and volume behavior may require extra attention for daily use.
What buyers think
Buyer-review evidence is mixed, with clear themes around usability and driving power. Shoppers frequently mention that the device is attractive and that having Bluetooth plus wired operation is genuinely useful when you need “options” on the go. Multiple reviews also highlight the value of the touchscreen UI (album art and track info during Bluetooth playback) and the overall convenience of using it as a portable amp.
On the downside, review evidence points to Bluetooth reliability and media control friction for some users, including trouble reconnecting after pausing and difficulty resuming playback. There is also limited, but direct, feedback that output power may not be sufficient for louder listening with higher-impedance headphones. Where audio performance is discussed positively, the improvements are often described in terms of clarity and added audible fidelity compared with simpler portable options, while some buyers attribute perceived changes to EQ rather than the hardware alone.
Key features that matter for buying
Bluetooth, NFC, and high-resolution codec support
The HiBy W4 is built for wireless listening via Bluetooth 5.4, with NFC one-touch pairing for faster setup. If you use compatible Android devices, the wireless codec list includes LDAC and aptX Lossless (and aptX HD), which helps you preserve more detail than standard Bluetooth audio when your phone supports it.
That said, buyer feedback suggests Bluetooth behavior may require patience. If you strongly depend on quick reconnects, uninterrupted media control, and easy “pause and resume” workflows, this is an important consideration before you buy.
Wired flexibility with USB DAC mode and dual headphone outputs
In addition to Bluetooth, the W4 can work as a USB DAC amplifier, switching between Bluetooth playback and USB audio output. For headphones, it offers both 3.5mm single-ended and 4.4mm balanced connections. Balanced output is typically the choice for users who want better headroom and control with supported headphones.
It also includes external microphone input support, plus cVc noise reduction intended to improve voice-call clarity.
Touchscreen UI and what it adds in daily use
The 2-inch touchscreen is more than decoration. It can display album artwork and track information over Bluetooth, and it continues to show the current sampling rate indicator even when the screen is off.
Some buyers still find the UI a little slow or “basic,” so if you expect a flagship-level experience, consider whether you mainly care about the audio versus the screen.
Sound tuning controls, filters, and volume behavior
For adjusting your listening, the W4 includes multiple gain levels, channel balance adjustments, digital filters, and EQ presets. There is also a volume limit feature designed for hearing safety, with the ability to expand the limit in developer mode.
One recurring usability complaint from a buyer centers on volume behavior after certain power-saving events, including the need to manually raise volume again. If you regularly listen in short bursts or rely on exact saved volume levels, keep that in mind.
Performance and power: the practical reality
The W4 is designed to drive a wide range of headphones, and its balanced output (4.4mm) plus rated output power up to 475mW are meant to give you usable headroom. However, review evidence includes at least one direct complaint that maximum output did not deliver enough loudness for an HD-series high-impedance headphone. That suggests the W4 can be a good fit for many IEMs and easier-to-drive headphones, but it may not be the most reliable choice for high-impedance, harder-to-drive models when you need volume headroom.
Who should buy it, and who should skip it
Best for
- People who want one portable device that can do Bluetooth and wired USB DAC audio.
- Users with IEMs or headphones that are easier to drive, especially if you want the option to use 4.4mm balanced.
- Buyers who value the touchscreen display experience (track info and album art) and want at-a-glance audio info like sampling rate.
- Shoppers who care about high-resolution wireless codecs such as LDAC and aptX Lossless (when supported by their phone).
Consider alternatives if
- You need extremely reliable Bluetooth reconnection and media resume behavior, with minimal fuss.
- You own higher-impedance headphones and require strong loudness headroom from a portable amp.
- You prefer very fast, highly responsive UI navigation and flexible EQ beyond stock presets.
Verdict
The HiBy W4 is a feature-rich portable amp and USB DAC that makes sense for shoppers who want Bluetooth convenience plus wired flexibility, along with a distinctive touchscreen experience. Just don’t ignore the buyer-review signals around Bluetooth reliability and output-loudness limits with higher-impedance headphones. If your headphones are easy to drive and you can tolerate some potential Bluetooth quirks, it can be a satisfying “one device for most situations” option.
Price and availability
Check current pricing on Amazon to compare against other portable DAC/amp options with Bluetooth. Since prices can vary significantly by day and bundle, the right choice often comes down to whether you value touchscreen UI, codec support, and dual output (3.5mm plus 4.4mm) more than you value maximum Bluetooth reliability or absolute driving power.
Alternatives to consider
Instead of comparing to specific models, use these decision criteria:
- If Bluetooth reliability is your top priority, look for portable DAC/amps with a strong track record for stable reconnection and consistent media control behavior.
- If you need power for high-impedance headphones, prioritize amps that clearly state higher drive capability and are known to deliver loud output without strain.
- If you mainly want USB DAC performance, consider models that focus on wired DAC use with simpler wireless behavior, to reduce potential Bluetooth friction.
- If you love the touchscreen, match your expectations to devices that genuinely improve day-to-day usability, not just display info.
FAQs
Is the HiBy W4 good for both Bluetooth and wired use?
Yes. It supports Bluetooth playback and can also operate as a USB DAC amplifier, so you can switch between wireless listening and wired audio through USB.
Does the HiBy W4 have balanced headphone output?
Yes. It includes both 3.5mm single-ended and 4.4mm balanced headphone outputs.
What Bluetooth pairing options does it support?
It supports Bluetooth 5.4 and NFC one-touch pairing for faster setup.
Is the HiBy W4 powerful enough for high-impedance headphones?
Buyer feedback includes concerns that it may struggle to get loud enough for higher-impedance headphones at maximum output. If you have high-impedance models and need strong headroom, it’s worth double-checking driving requirements and being realistic about portability power limits.
Does the touchscreen do anything useful?
Yes. It can show album artwork and track information during Bluetooth playback, and it can display the current sampling rate indicator.
Are there any common downsides buyers mention?
Review themes include Bluetooth reconnection and media control issues for some users, plus occasional complaints about UI responsiveness and loudness limitations for certain headphones.
Specifications
| Product Title | HiBy W4 Bluetooth Headphone Amplifier USB DAC, BT 5.4 & NFC, aptX Lossless LDAC, Dual DAC, DSD512 PCM 768kHz, 2-Inch Touch Screen, CVC Noise Reduction, 3.5mm & 4.4mm Balanced Output |
|---|---|
| Category | Electronics > Headphones, Earbuds & Accessories > Amplifiers |
| Brand | HiBy |
| Manufacturer | HiBy |
| Model Name | W4 |
| Model Number | W4 |
| Form Factor | In Ear |
| Connectivity Technology | Bluetooth, NFC, USB |
| Color | Black |
| Brand Name | HiBy |
| Built-In Media | 1x Back Clip, 1x HiBy W4 Bluetooth Amplifier, 1x Type-C to Type-C Cable, 1x USB A to C Adapter |
| Warranty Description | Free one-year repair for damage to the main unit caused by non-human factors. |
| Number of Items | 1 |
| UPC | 717405464077 |
| Control Type | Touch Control |
| Specific Uses For Product | Headphone Amplification, Audio Listening, Music Playback |
| Compatible Devices | Cellphones, Headphones, Laptops, PCs, Tablets |
| Additional Features | Charging Lock & Car Power Follow Mode, DSD512 & PCM 768kHz High Resolution Audio, High Power Balanced Headphone Output, Touchscreen UI with Sampling Rate Indicator, USB DAC & Bluetooth 5.4 & NFC with aptX Lossless, LDAC high-resolution codecs |
| Headphone Jack | 3.5 mm, 4.4 mm |
| Wireless Technology | Bluetooth, NFC |
| Headphones Ear Placement | In Ear |
| Headphone Folding Features | In Ear |
| Unit Count | 1.0 Count |
| Ear Placement | In Ear |
| Headphones Jack | 3.5 mm, 4.4 mm |
Available variants
Color
- Black
- Orange
- Cyan
- Green
- White
- Yellow
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