FiiO M33 R2R – High-Resolution Android Digital Audio Player

The M33 R2R from FiiO is a premium portable digital audio player built around a fully differential 24-bit R2R resistor ladder DAC. Powered by Android and a Snapdragon processor, it combines true analog-style sound with modern streaming capability, strong amplification, and desktop-grade versatility.

Product Highlights

Fully differential 24-bit R2R resistor ladder DAC architecture
Qualcomm Snapdragon 680 processor with Android 13 system
5.5-inch Full HD touchscreen display
8GB RAM + 128GB internal storage
microSD expansion up to 2TB
3.5mm single-ended and 4.4mm balanced headphone outputs
Line-out functionality via both 3.5mm and 4.4mm
USB DAC function with high-resolution audio support
Bluetooth with LDAC, aptX HD, LHDC and SBC support
10-band parametric EQ with advanced sound tuning
Dual USB-C ports with dedicated Desktop Mode
Long battery life for extended portable listening

Specifications

Type: Portable High-Resolution Digital Audio Player
Operating System: Android 13
Processor: Qualcomm Snapdragon 680
Display: 5.5-inch Full HD Touchscreen
RAM: 8GB
Internal Storage: 128GB
Expandable Storage: microSD up to 2TB
DAC Architecture: Fully Differential 24-bit R2R
Headphone Outputs: 3.5mm single-ended, 4.4mm balanced
Line Output: Supported via 3.5mm and 4.4mm
USB DAC Support: High-resolution PCM and DSD playback
Bluetooth Codecs: SBC, aptX HD, LDAC, LHDC
Equalizer: 10-band Parametric EQ
Charging Port: USB-C
Operating Modes: Android Mode, USB DAC Mode, Desktop Mode
Dimensions: Approx. 138.2 × 71.5 × 17 mm
Weight: Approx. 258 g

What’s in the Box

FiiO M33 R2R Digital Audio Player
USB-C Charging/Data Cable
Protective Case
Screen Protector
User Manual

Key Features

True R2R DAC design delivering smooth, natural tonality
Android platform for streaming apps and local playback
Balanced and single-ended outputs for wide headphone compatibility
High-performance amplification suitable for demanding headphones
Desktop Mode for stable power during stationary use
Expandable storage for large high-resolution music libraries