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| Model | M21 |
| SoC | Qualcomm Snapdragon 680 |
| Operating Modes | Android / Pure Music / AirPlay / USB DAC / Bluetooth Receiver |
| Firmware Upgrade | Local storage, memory card, OTA |
| Colours | Titanium Gold, Dark Blue |
| Dimensions | 121 × 68 × 17 mm (approx.) |
| Weight | 193g (approx.) |
| Display | 4.7-inch bezel-less, 750 × 1334 |
| RAM | 4GB |
| Internal Storage | 64GB (approx. 52GB usable) |
| Memory Card Slot | Single microSD, up to 2TB (theoretical) |
| DAC | 4 × Cirrus Logic CS43198 |
| Amplifiers | 2 × OPA1692 + 2 × SGM8262-2 |
| Adaptive Impedance | PO: 8–350Ω / BAL: 8–350Ω |
| Channel Separation | L20, R20 (0.5dB per level) |
| Volume Control | Button control |
| Special Decoding | MQA full decoding, All-to-DSD |
| EQ | 10-band EQ (±12dB), 8 presets, custom EQ |
| Wi-Fi | 2.4GHz/5GHz, DLNA, AirPlay, Wi-Fi song transfer, Roon Ready |
| Bluetooth Reception (5.0) | SBC, AAC, LDAC |
| Bluetooth Transmission (5.0) | SBC, AAC, aptX, aptX HD, LDAC, LHDC |
| FiiO Link | Wi-Fi + Bluetooth (Android); Bluetooth only (iOS) |
| USB DAC Mode | Up to 384kHz/32bit, DSD256 (Native) |
| USB Audio | Up to 768kHz/32bit, DSD512 (DoP/D2P/Native) |
| Coaxial Output | Up to 384kHz/24bit, DSD128 (DoP) |
| Physical Buttons | Power, Multifunction, Volume, Play/Pause, Previous, Next |
| Switches | HOLD, D.MODE |
| Line Out (LO) | 3.5mm (shared PO) |
| Balanced Line Out | 4.4mm (shared BAL) |
| Headphone Output | 3.5mm |
| Balanced Headphone Output | 4.4mm |
| Coaxial Output | 3.5mm (shared PO) |
| Special Connectors | Cassette-style protective case contacts |
| PO (3.5mm) Super High Gain | ≥480mW+480mW (16Ω), ≥405mW+405mW (32Ω), ≥45mW+45mW (300Ω); SNR ≥124dB; THD+N ≤0.0003%; Crosstalk ≥74dB; Noise ≤2μV |
| PO (3.5mm) High Gain | ≥380mW+380mW (16Ω), ≥290mW+290mW (32Ω), ≥35mW+35mW (300Ω) |
| BAL (4.4mm) Super High Gain | ≥540mW+540mW (16Ω), ≥950mW+950mW (32Ω), ≥185mW+185mW (300Ω); SNR ≥126dB; Crosstalk ≥109dB; Peak 21.2Vp-p; Noise ≤2.7μV |
| BAL (4.4mm) High Gain | ≥600mW+600mW (16Ω), ≥720mW+720mW (32Ω), ≥90mW+90mW (300Ω) |
| LO Output | 1.9Vrms (SE) / 3.9Vrms (BAL); THD+N ≤0.0005%; Crosstalk ≥111dB |
| Charging | D2.0 and PD3.0 fast charging |
| Charging Time | Approx. 1.5h (PD3.0) |
| Battery Life | 15h (3.5mm SE) / 12.5h (4.4mm BAL) – MP3 44kHz/16bit, 32Ω, screen off, EQ off, high gain |
| Power-Off Timers | Sleep/Idle supported |
| Navigation Modes | Gesture, 2-button, 3-button |
| Double Tap to Wake | Supported |
Experience studio-grade Hi-Res audio anywhere with the FiiO M21 Portable High-Res Lossless Music Player. Dual Cirrus Logic CS43198 DACs, Snapdragon 680, custom Android 13 OS, dual balanced & single-ended outputs, advanced DAPS system, 3 gain levels, two-way LDAC Bluetooth 5.0 and asynchronous USB DAC with up to 768kHz/32bit support deliver pure, powerful sound wherever you go.
The M21 redefines the entry-level class with its flagship lineage.
Its internal and external “hearts” are full of “heart” in providing you with enjoyment.
Its compact screen and class-defying performance are a massive step forward.
Aiming to be a benchmark for an entirely new generation
The Qualcomm Snapdragon 680 has superior performance with less power consumption than the SoCs used by players in the same class. It provides a smooth experience with Android 13.
In portable mode, it operates with standard voltage power supply. When using the external power “Super high gain mode, the player automatically switches to using a high-voltage power supply with 21Vpp (3000) peak drive voltage and 950mW (320) massive output power. This delivers desktop-level power output, making the player a better fit with a wider range of earbuds or headphones for a truly extraordinary auditory feast.
The custom cassette-style protective case paired with an exclusive retro Ul and tailored vintage sound effects all take you on a nostalgic journey back to the Walkman era.. Remove the protective case to seamlessly switch back to the original system, giving you the flexibility to use it how you want to.
The fully aluminum alloy body with an AG frosted glass back offers a delicate texture and comfortable grip. The screen features an oleophobic coating that significantly reduces fingerprints and smudges, making for smoother touch operation.
In the M21’s audio circuit are high-precision thin-film resistors and low-temperature-drift capacitors that ensure refined and stable sound quality – specifically the greater consistency between the left and right channels and across all frequency ranges. Additionally, fine circuits such as the DAC and headphone amplifier are equipped with over 10 low-impedance, high-capacity tantalum capacitors. These provide abundant energy reserves and a robust power supply for more powerful, dynamic sound.
The digital and headphone amplifier sections exist in separate partitions and each is equipped with independent shielding covers for isolation. This not only further reduces signal crosstalk but also enables efficient heat dissipation, delivering purer sound.
There are separate power supply paths for the digital and analog circuits, which effectively reduce crosstalk between the two. The result is more precise digital processing, purer analog output, and enhanced driving power. The analog circuit is further subdivided into multiple independent power supplies for components such as the DAC and headphone amplifier. This clean and robust power delivery enhances the dynamic range and leads to greater reproduction of details in the audio for a more refined and natural sound.
FIIO developed a custom crystal oscillator specifically for the M21, which has been carefully selected to meet femtosecond-level standards, in order to ensure consistency and stability in its output. With a high-precision, low-jitter unified clock source, it accurately matches PCM and DSD audio at various sampling rates, ensuring precise reproduction of digital audio signals.
The M21’s 4000mAh high-voltage battery provides up to 15 hours of ultra-long battery life, effortlessly providing the energy for extended listening sessions when commuting or traveling, allowing you to fully immerse yourself in the world of music. It also supports 20W PD fast charging, enabling quick recharges even during short breaks.
| Colour | Blue, Titanium Gold |
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As a company our primary goal is to provide a seamless service that results in customer satisfaction. We aim to deliver within 3 working days. Unfortunately, there may be occasions where this time frame may not be met due to unforeseen circumstances; in this instance, we deliver product/s as soon as we can. All delivery charges are included within the prices quoted, unless otherwise specified.
All small items are usually delivered between 9am and 6pm, on a Monday to Friday, unless a Saturday delivery is requested. Follow My Parcel is an industry-changing innovation from DPD Local, which will give your customers unparalleled levels of information and peace of mind.Not only will your customers receive a one hour delivery timeslot, but they’ll now also be able to track the progress of their parcels on a map as our drivers make their way to the delivery addresses. Follow My Parcel will:
