FiiO M21 adopts an all-aluminum alloy body, AG frosted glass back cover, 4.7-inch small screen with built-in oleophobic layer, equipped with a new octa-core Snapdragon 680 chip, 4+64GB storage, Android 13 system, 4 CS43198 matrix DACs, which can provide 950mW (32Ω) thrust, support fully balanced level 2 amplification, and support L0 Dual output, low jitter coaxial output.

Design & Build
Body: Full aluminum alloy chassis for durability and premium feel
Back Cover: AG matte glass, fingerprint-resistant with a sleek look
Display: Compact 4.7-inch screen, perfect for one-handed use
Protection: Built-in oleophobic coating for smoother touch experience

Core Hardware
Processor: Qualcomm Snapdragon 680 octa-core, ensures smooth performance
Memory & Storage: 4GB RAM + 64GB ROM, enough for most usage scenarios
Operating System: Android 13, compatible with major streaming and music apps

Audio Performance
DAC Chips: 4 x Cirrus Logic CS43198 in a matrix setup, delivering pure, detailed sound
Output Power: Up to 950mW @ 32Ω, capable of driving most headphones with ease
Amplification: Fully balanced dual-stage amplification for lower noise and higher dynamics

Output Options:
L0 dual output: Supports both headphone and line-out connectivity
Low-jitter coaxial digital output: Delivers accurate digital audio signals