FiiO M33 R2R Digital Audio Player

The FiiO M33 R2R Digital Audio Player is a premium high-resolution portable music player engineered for audiophiles who demand authentic analogue tonality with modern Android flexibility. Featuring a fully differential 24-bit R2R resistor ladder DAC, powerful balanced amplification, and a high-performance Snapdragon platform, the M33 R2R delivers natural musicality, outstanding detail retrieval, and the versatility of a smart device — all in a beautifully built portable chassis.

Designed for both portable and desktop use, the M33 R2R combines genuine R2R architecture with up to 1100mW of output power, full Android 13 functionality, high-resolution streaming capability, and comprehensive wired connectivity including 3.5mm single-ended and 4.4mm balanced outputs.

True 24-bit R2R Ladder DAC Architecture

At the heart of the M33 is a fully differential 24-bit R2R resistor ladder DAC array. Unlike conventional delta-sigma DAC designs, R2R technology is renowned for its organic tonal balance, smoother transient response, and analogue-like presentation. The result is a natural, coherent sound signature with realistic timbre, excellent micro-detail, and effortless musical flow.

FiiO’s implementation ensures precision matching and channel balance while maintaining low distortion and high dynamic performance.

High-Power Balanced Amplification

The M33 R2R is equipped with a powerful multi-stage headphone amplification section capable of driving a wide range of headphones and in-ear monitors.

Output Power:
4.4mm Balanced: 1100mW + 1100mW @ 32Ω
3.5mm Single-Ended: 470mW + 470mW @ 32Ω

This ensures excellent control over demanding full-size headphones while maintaining low noise for sensitive IEMs. When connected to external power, Desktop Mode enables higher performance output for use within a home audio system.

Android 13 with Snapdragon Performance

Powered by a Qualcomm Snapdragon 680 processor, the M33 R2R delivers smooth performance and app compatibility.

System Specifications:
Operating System: Android 13
Processor: Qualcomm Snapdragon 680
RAM: 8GB
Internal Storage: 128GB
Expandable Storage: microSD card support

Install streaming services, download music apps, or play locally stored high-resolution files with responsive navigation and multitasking capability.

High-Resolution Display & Build Quality

The M33 R2R features a sharp and responsive touchscreen display for intuitive control and album artwork clarity.

Display Specifications:
Screen Size: 5.5-inch LCD
Resolution: 1920 × 1080
Aspect Ratio: 18:9
Protection: Corning Gorilla Glass 3 with oleophobic coating

The premium chassis construction ensures durability while maintaining a comfortable handheld design.

Advanced Audio Customisation

Fine-tune your listening experience with comprehensive sound adjustment tools:

10-band Parametric Equaliser
AUTO EQ Support
Proprietary digital audio purification system
USB DAC functionality
Coaxial digital output
USB audio output

The XMOS XU316 USB controller ensures stable high-resolution digital signal processing when used as a USB DAC.

Extensive Format & Playback Support

The M33 R2R supports a wide range of high-resolution audio formats including:

PCM up to 24-bit / 384kHz
DSD playback support
High-resolution streaming via Android apps

This makes it suitable for both locally stored lossless libraries and modern streaming platforms.

Long Battery Life & Fast Charging

Designed for extended listening sessions, the M33 R2R balances performance with efficiency.

Battery Specifications:
Capacity: 4400mAh
Battery Life (3.5mm): Up to approx. 14 hours
Battery Life (4.4mm): Up to approx. 12.5 hours
Charging Time: Approx. 1.5 hours (fast charging supported)

Connectivity & Outputs

3.5mm Single-Ended Headphone / Line Out
4.4mm Balanced Headphone / Line Out
USB-C (charging & data transfer)
USB 3.0 high-speed file transfer
Coaxial digital output
Bluetooth connectivity

Dimensions & Build

Weight: Approx. 258g
Premium metal chassis
Touchscreen interface

What’s in the Box

FiiO M33 R2R Digital Audio Player
Protective leather case
Tempered glass screen protector
USB charging / data cable

Why Choose the FiiO M33 R2R?

The FiiO M33 R2R stands apart by combining genuine R2R ladder DAC technology with modern Android streaming capability and powerful balanced output. It is ideal for audiophiles seeking analogue-like warmth, detailed resolution, and versatile functionality in a portable high-resolution digital audio player.

Whether used as a premium portable music player, a USB DAC, or a compact desktop source component, the M33 R2R delivers uncompromising sound performance with contemporary convenience.

Shipping, returns & warranty

Shipping: insured courier, UK-wide.
Returns: see our Returns page for details.
Warranty: UK authorised supply.