The FiiO M21 is a high-quality digital audio player that redefines premium-class sound quality. Equipped with cutting-edge dual CS43198 DAC chips and a sophisticated dual-stage amplification system, this player delivers exceptional sound quality for discerning music enthusiasts.
Features:
- Snapdragon 680 8-core processor (6 nm)
- Android 13 operating system
- 4 CS43198 DACs
- Fully balanced two-stage amplification scheme
- Power output of up to 950 mW
- Two USB-C ports
- Coaxial output with low jitter
- Two power modes: portable and stationary
- Compact 4.7-inch HD display
- Stylish protective case in the shape of an audio cassette
Flagship CS43198 DAC Chip from Cirrus Logic
The FiiO M21 is equipped with four CS43198 DAC chips, ensuring exceptional sound quality thanks to an eight-channel fully differential output design. This powerful configuration expands the dynamic range and reduces interference, allowing your headphones to fully unleash their potential with flawless sound reproduction.
Dual-Stage Headphone Amplifier
The enhanced FiiO M21 headphone amplifier features a complex dual-stage design that combines voltage amplification and current amplification for exceptional sound purity. The digital and amplifier sections are housed in separate shielded compartments, minimizing interference and optimizing heat dissipation for consistently clean sound reproduction.
Clean Sound with Separate Digital and Analog Circuits
The FiiO M21 utilizes a dual power source architecture that separates the digital and analog circuits, minimizing interference and crosstalk. This design, combined with multiple independent power sources for components such as the DAC and headphone amplifier, ensures flawless sound reproduction with an extended dynamic range, clearer sound separation, and more detailed audio.
Universal Dual Power System
The FiiO M21 features a universal dual power system that adapts to your needs. In portable mode, it operates at standard voltage, but when connected to an external power source in "Super High Gain" mode, it automatically switches to high voltage power, providing peak voltage of 21 V and output power of 950 mW. This desktop-level performance ensures compatibility with a wide range of headphones and headsets, delivering exceptional sound quality.
High-Quality Components
The audio circuit of the FiiO M21 is equipped with premium-class components for superior sound quality, including high-precision thin-film resistors and capacitors with low temperature drift, ensuring stable operation across all channels and frequencies. The DAC and headphone amplifier use over 10 tantalum capacitors with low impedance and high capacitance, providing sufficient power reserves for dynamic and powerful sound while maintaining signal integrity.
Precise Sound Reproduction with 5th Gen FPGA and Two Customizable Femtosecond Generators
The player features enhanced sound optimization thanks to the 5th Gen FPGA and two customizable femtosecond quartz generators. These precision generators, specially designed for the M21, meet femtosecond-level standards and provide exceptional synchronization accuracy. The high-precision unified clock source with low jitter ensures perfect synchronization of audio in PCM and DSD formats with various sampling frequencies, resulting in precise and authentic reproduction of digital sound.
The FiiO M21 runs on the Qualcomm Snapdragon 680 processor, setting a new standard for entry-level digital audio players with high performance and low power consumption compared to competitors. Running on Android 13, it provides stable and responsive operation.
FiiO M21 supports next features:
- Full decode of MQA 8x
- Bidirectional Bluetooth LDAC data transmission
- Five operating modes for various scenarios
- Customizable buttons for accessing multiple functions
- RGB backlight for display information
Enjoy versatile analog and digital outputs for seamless connectivity. The M21 supports the following connection options:
- Two headphone outputs – 3.5 mm and 4.4 mm
- High-performance coaxial SPDIF output with 70% reduced jitter for connecting premium-class external DACs
- Ability to connect to external DACs via USB audio output, transforming the device into a media center for streaming when connected to external DACs.
Design and Accessories:
Combining an aluminum alloy body with a matte AG glass back panel, the FiiO M21 offers elegant aesthetics and ergonomic comfort. The display is coated with an oleophobic layer, effectively protecting against fingerprints and dirt while providing smooth and responsive touch interaction.
Package includes:
- Player
- Case
- USB cable
- Manual
























































