FiiO M21 DAP Portable Hi-Res Digital Audio Music Player Bluetooth Black
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The FiiO M21 is a portable Hi-Res digital audio player running Android 13 on a Qualcomm Snapdragon 680, with four CS43198 DACs, fully balanced 4.4mm and 3.5mm outputs, and a 4.7-inch HD screen. Part of FiiO's M-series DAP range.
This listing is the Black. The FiiO M21 is also available in Dark Blue.
Key specifications
- Processor: eight-core 6nm Qualcomm Snapdragon 680, Android 13
- DACs: 4 x CS43198, fully balanced 2-stage amplification
- Outputs: 3.5mm and 4.4mm headphone / line out, low-jitter coaxial output
- Screen: 4.7-inch HD
- Storage: 64GB onboard, expandable via microSD up to 2TB
- Bluetooth: 5.0 (SBC, AAC, aptX, aptX HD, LDAC, LHDC)
- Battery: 4000mAh, up to 15 hours, 20W PD fast charging
- Dimensions and weight: 68 x 121 x 17 mm, 193g
FiiO M21 digital audio player
The M21 brings flagship-level architecture to the entry-level class. Four CS43198 Matrix DACs, a Snapdragon 680 processor, and Android 13 combine to deliver a strong benchmark for a new generation of portable audio players.
- Eight-core 6nm Snapdragon 680
- Android 13
- 4 x CS43198 Matrix DACs
- Fully balanced 2-stage amplification
- Dual Type-C ports
- Low-jitter coaxial output
- Desktop and portable dual power supply modes
- 4.7-inch compact HD screen
- 3.5mm and 4.4mm headphone / line out dual output
- Bluetooth 5.0 (SBC, AAC, aptX, aptX HD, LDAC, LHDC)
- 64GB onboard storage, expandable via microSD up to 2TB
Flagship SoC: a new entry-level benchmark
The Qualcomm Snapdragon 680's six-nanometre eight-core architecture balances strong performance with low power consumption, keeping Android 13 smooth throughout.
4 x CS43198 DACs
Four DAC chips enable an eight-channel fully differential output design. The headphone amplifier uses a two-stage circuit: the first stage handles voltage amplification; the second handles current expansion. The result is purer sound with strong dynamics, rich detail, and high anti-interference capability.
Patented desktop mode: battery protection
Desktop mode appears on an entry-level FiiO player for the first time. When enabled, the M21 runs entirely from an external power supply — the built-in battery is neither charged nor discharged — so you can use it safely on a desk without degrading battery health over time.
True quality inside and out
The full aluminium alloy body with AG frosted glass back gives a solid, comfortable feel. The screen carries an oleophobic coating that reduces fingerprints and smudges for smoother touch operation.
Up to 15 hours battery life
The 4000mAh high-voltage battery delivers up to 15 hours of playback — enough for long commutes or travel days. 20W PD fast charging tops it back up quickly during short breaks.
Explore the full range in Hi-Res Players.
Specification
| Bluetooth | 5.0 (SBC, AAC, aptX, aptX HD, LDAC, LHDC) |
|---|---|
| Size | 68mm x 121mm x 17mm. Weight: 193g |
| Signal to noise ratio | ≥ 126dB (A-weighted) |
| Bottom noise | < 1.6uV (A-weighted) |
| Output impedance | < ten |
| THD+N | <0.0003%(1kHz/ -4dB@322 ) |
More specs
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What's Included
- FiiO M21 Digital Audio Player Black
- Pre-installed tempered screen protector
- Protective case in matching colour
- USB cable
- Quick start guide
FiiO
About the FiiO M21 Black
From our tech experts at CEN
A FiiO digital audio player, a dedicated source for people who have outgrown listening on a phone.
Who it suits
Listeners running decent headphones who suspect the source is the limiting factor. It usually is: the converter and output stage in a phone are built to a budget and a power envelope. FiiO built its name making capable portable audio at prices that undercut the establishment.
Our tech experts advise
Match the output to your headphones — sensitive in-ears and demanding over-ears want very different things, and more power is not automatically better. get in touch for a pairing recommendation.
Explore the full FiiO range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all FiiO
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Frequently Asked Questions
Q: How long does the FiiO M21 battery last?
A: Its 4000mAh battery provides up to 15 hours of playback, and it supports 20W PD fast charging. In desktop mode it runs entirely from external power without charging or discharging the battery.
Q: Does the FiiO M21 have a balanced output?
A: Yes. It has a 4.4mm balanced output and a 3.5mm output, both usable as headphone or line out, driven by four CS43198 DACs in a fully balanced, eight-channel differential design. There is also a low-jitter coaxial output.
Q: Which Bluetooth codecs does the FiiO M21 support?
A: Bluetooth 5.0 with SBC, AAC, aptX, aptX HD, LDAC and LHDC.
Q: What is in the box with the FiiO M21?
A: The FiiO M21 player in black, a pre-installed tempered screen protector, a protective case in matching colour, a USB cable and a quick start guide.
