FiiO M21 High-Resolution Portable Lossless Audio Player with Dual DAC Architecture, Balanced Outputs, and Android OS (Titanium)
The FiiO M21 sets a new benchmark for portable audiophile performance, blending desktop-grade audio architecture with smooth open Android versatility. Built around dual high-performance DAC chips configured in a fully differential setup, the M21 reproduces intricate musical details with precise spatial imaging, ultra-low distortion, and an expansive soundstage. Whether playing high-bitrate local audio files or streaming lossless audio from services like Apple Music, Tidal, or Qobuz, this digital audio player ensures uncompromised sound purity anywhere you go.
Housed in a precision-machined aluminum alloy chassis, the FiiO M21 features versatile single-ended 3.5mm and balanced 4.4mm headphone outputs driven by a high-current amplifier circuit. Its crisp high-definition touchscreen provides effortless navigation across custom digital filters, gain stages, and parametric EQ settings. Equipped with high-speed Wi-Fi, two-way LDAC Bluetooth streaming, USB DAC capability, and expandable storage, the FiiO M21 is built to serve as the ultimate portable hub for discerning audio enthusiasts.
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Key Features:
- Dual Flagship DAC Configuration: Operates two independent digital-to-analog converters in a fully balanced circuit design for exceptionally clean signal resolution and high signal-to-noise ratio.
- High-Power Balanced Output: Outfitted with 3.5mm single-ended and 4.4mm balanced ports to comfortably drive both sensitive in-ear monitors and demanding full-sized headphones.
- Open Android OS Architecture: Supports direct installation of high-resolution music streaming apps, bypasses system sample-rate conversion (SRC), and ensures bit-perfect audio playback.
- Precision CNC Aluminum Body: Crafted with an acoustically shielded, durable metal alloy shell that effectively rejects external electromagnetic interference (EMI).
- High-Res Two-Way Bluetooth: Supports advanced wireless codecs including LDAC, aptX HD, and AAC for lossless transmission both to wireless headphones and as a Bluetooth receiver.
- Asynchronous USB DAC Mode: Functions as a ultra-low-jitter external desktop DAC and headphone amplifier when connected to Mac, PC, smartphone, or tablet devices.
- Expandable MicroSD Storage: Features a high-capacity MicroSD card expansion slot, allowing you to carry massive offline libraries of uncompressed FLAC, DSD, and WAV files.
- Long-Battery Endurance & Fast Charge: Optimized power management circuitry pairs with high-density battery capacity to support extended uninterrupted listening sessions.
Specifications:
- Audio Architecture & Decoding Specs:
- DAC Architecture: Dual High-Performance DAC Configuration
- Supported Audio Formats: DSD512, PCM, FLAC, WAV, ALAC, AIFF, APE, WMA, MP3, AAC
- PCM Sample Rates: Up to 768kHz / 32-bit
- DSD Support: Native DSD Decoding (up to DSD512)
- Frequency Response: 10Hz – 80kHz (-3dB)
- Signal-to-Noise Ratio (SNR): >122dB (A-weighted)
- THD+N: <0.0005% (1kHz / 32 ohms)
- Output & Connectivity Capabilities:
- Headphone Outputs: 3.5mm Single-Ended / 4.4mm Balanced TRRS
- Line Out / Coaxial Out: Shared via 3.5mm Port
- USB Interface: USB Type-C (Data, USB DAC, Charging)
- Wireless Connectivity: Dual-Band Wi-Fi (2.4GHz/5GHz), Bluetooth 5.0 (LDAC, aptX HD, SBC, AAC)
- Storage Capacity: Internal Storage + MicroSD Expansion Slot (Supports up to 2TB)
- Power System & Dimensions:
- Battery Capacity: High-Density Rechargeable Lithium-Polymer
- Charging Support: Quick Charge / USB-C PD Charging
- Continuous Playback Time: Up to 10.5 Hours (Depending on volume and output load)
- Display: High-Definition IPS Touchscreen
- Chassis Material: Anodized CNC Aluminum Alloy
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