HiBy R6 III (2025) - vividsound
HiBy R6 III (2025) digital audio player, image 2
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HiBy R6 III (2025)

€449,00

A cleaner, more refined player for when the earphone deserves a proper source — quiet background, honest sound, plenty of power.

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Our take

 

 

The R6 III is the step up from a first player. Where a budget device gets you loud, this one gets you clean. Four DAC chips and a genuinely quiet, low-noise design give it an unusually black background — silence between the notes, nothing buzzing underneath — which is exactly what the more revealing earphones need to show what they can do.

You can switch its amp between two modes: one that prioritises the purest sound, one that trades a little of that for longer battery. It runs full Android, so your apps just work, and it has the outputs to connect to almost anything. The sound stays neutral and honest — it doesn't add its own flavour, it lets the earphone speak.

 

What it'll drive :

Comfortably drives every earphone in the lineup with power to spare.
But raw power isn't really the point here — the cheaper R4 actually pushes out more watts. What the R6 III gives you instead is a cleaner source: a quieter background and finer detail. That matters most for the sensitive and revealing sets. Letshuoer Mystic8, which can hiss on a noisy source, sits dead silent here. And the detailed sets like the Mega5EST reward the extra clarity with more space and nuance.

If you've got a resolving earphone and want to hear all of it, this is the better match.

Streaming & compatibility

 

Open Android 12 with system-wide bit-perfect audio, so streaming apps run properly and at full quality — Apple Music, Tidal, Spotify, Qobuz, YouTube Music.
The same honest caveat applies: Apple Music on Android won't go fully bit-perfect, so Tidal or Qobuz are the picks if you want the absolute best.

Beyond headphones, it has the connections to be the hub of a setup: a line-out and a coaxial digital output to feed a bigger system, plus USB DAC mode for your laptop and two-way Bluetooth.

It also has genuinely good built-in tuning tools if you like to tweak — a full EQ and Hiby's slider-based sound adjustments — that work across every app, not just the music player.

Power & Battery

 

Two headphone outputs: 125 mW from the 3.5 mm, 405 mW from the balanced 4.4 mm — ample for any earphone here. The amp switches between Class A (the best sound) and Class AB (longer runtime), so you choose.

The 4500 mAh battery is genuinely good for a player this capable — up to around 13 hours single-ended, closer to 11 on balanced, and it takes about two hours to fully charge with 18 W fast charging.

Distortion is vanishingly low and the noise floor is very quiet, which is the whole reason to reach for this over something cheaper.

Specs

  • DAC: quad Cirrus Logic CS43198
  • Amp: switchable Class A / Class AB
  • Processor: Qualcomm Snapdragon 665, 4 GB RAM\
  • OS: Android 12, system-wide bit-perfect
  • Storage: 64 GB internal + microSD up to 2 TB
  • Outputs: 3.5 mm single-ended + 4.4 mm balanced, coaxial digital out, USB DAC
  • Output power: 125 mW (3.5 mm) / 405 mW (4.4 mm balanced)
  • THD: 0.0006% (Class A) / 0.0007% (Class AB); SNR 126 dB (balanced)
  • Formats: PCM up to 32-bit/768kHz, native DSD512, MQA 16×
  • Wireless: Bluetooth 5.0 (two-way), Wi-Fi 2.4/5 GHz dual-band
  • Display: 5" 720p IPS touchscreen
  • Battery: 4500 mAh — up to ~13 h single-ended / ~11 h balanced; 18 W PD fast charge (~2 h full)
  • Dimensions: 129.4 × 73.1 × 15.6 mm
  • Weight: 250 g

What others ask

Will the HiBy R6 III (2025) drive full-size headphones as well as IEMs?

No, and that's the main reason to buy it. The Letshuoer Mystic 8 can hiss on a noisy source, and on the HiBy R6 III (2025) it sits dead silent. Four Cirrus Logic DAC chips and a low-noise design give it a properly black background, so you hear silence between the notes instead of a faint buzz underneath them.

Does the HiBy R6 III (2025) hiss with sensitive IEMs like the Letshuoer Mystic 8?

No, and that's the main reason to buy it. The Letshuoer Mystic 8 can hiss on a noisy source, and on the HiBy R6 III (2025) it sits dead silent. Four Cirrus Logic DAC chips and a low-noise design give it a properly black background, so you hear silence between the notes instead of a faint buzz underneath them.

Does the HiBy R6 III (2025) change how my earphones sound, or is it neutral?

It stays neutral. The HiBy R6 III (2025) doesn't add warmth or sparkle of its own, it lets the earphone speak, which is what you want from a detailed set like the Hisenior Mega5EST. If you'd rather your player added a little warmth, the HiBy R4 leans warm and easy by comparison, and the R6 III has a full EQ that works across every app if you like to tweak.

Can I stream Spotify, Tidal, Qobuz and Apple Music in full quality on the HiBy R6 III (2025)?

Yes. The HiBy R6 III (2025) runs open Android 12 with system-wide bit-perfect audio, so Spotify, Tidal, Qobuz, Apple Music and YouTube Music all install and play properly. One honest caveat: Apple Music on Android doesn't go fully bit-perfect, so if you want the absolute best quality, Tidal or Qobuz are the better picks.

How long does the HiBy R6 III (2025) battery last, and does Class A mode drain it faster?

The HiBy R6 III (2025) has a 4500 mAh battery that lasts up to around 13 hours from the 3.5 mm output and closer to 11 on balanced. Class A mode does cost you runtime, which is why you can switch: Class A for the best sound, Class AB when you need the battery to last the day. A full charge takes about two hours with 18 W fast charging.

HiBy R6 III (2025) or HiBy R4: is the upgrade worth it?

It depends on your earphones. The HiBy R4 at €249 is warmer and actually more powerful, while the HiBy R6 III (2025) at €449 is cleaner, quieter, neutral, and lasts noticeably longer on a charge. If you own a revealing or sensitive set like the Letshuoer Mystic 8 or Hisenior Mega5EST, the R6 III is the better match. As a first player, the R4 is plenty.

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