FiiO M33 R2R Portable High Resolution Music Player

From desktop to portable - The evolution of R2R

We've taken our proprietary R2R resistor array originally designed for desktop equipment, and brought it over to a portable player for the first time.

Shaped by the ears of expert acoustic engineers and perfected through feedback from the global audiophile community, it delivers the ultimate listening experience:

The unmistakable, lush analog warmth traditionally associated with R2R combined with balanced, high-fidelity performance.

Extensive storage Enduringly smooth performance

The Qualcomm Snapdragon 680 and an expansive 8GB RAM + 128GB ROM storage featured in the M33 R2R is unmatched in its class.

Experience effortless streaming and seamless multitasking. It offers extra performance and storage to easily handle any future updates as well as to ensure a stable and durable experience for years to come.

Perfect USB DAC audio-visual sync - Powered by a dedicated "core"

Frustrated by high latency when using a USB DAC for songs or videos?

A dedicated XMOS XU316 chip provides ultra-low latency and robust performance, ensuring flawlessly synchronized audio that stays consistent across all your devices.

Large 5.5-Inch HD Display - Beyond just size

Experience total immersion with a high-definition display designed for high-fidelity entertainment. New cassette tape, spectrum, and VU meter visuals pull you deeper into the music and give every track a classic retro flair.

Supports AUTO EQ

Your ideal sound, just a tap away

Find manually adjusting the 10-band lossless PEQ too complex?

AUTO EQ automatically matches your headphone's frequency curve, delivering your ideal sound profile instantly with lossless precision. In addition to sound presets such as pop, jazz and classical, the app also supports granular, per-band customization - allowing you to personally tune your own sound.

Packing List

• M33 R2R*1
• Leather case (pre-installed onto device) *1
• USB data cable*1
• Quick start guide*1
• Warranty card*1
• GPL V2 manual*1
• Screen protector (pre-applied onto device) *1

Basic Specifications

• Color: Retro gold/dark blue/black
• Dimensions: about 138.2x71.5x17mm
• Weight: about 258g
• Memory (RAM): 8GB
• Internal storage (ROM): 128GB (about 112GB usable)
• Storage expansion: supports up to 2 TB micro-SD cards

Hardware Specifications

• Main processor: Qualcomm Snapdragon 680
• DAC: FIIO proprietary R2R DAC
• USB: XMOS XU316
• Display: 5.5-inch (1080*2160) fully laminated screen
• Battery capacity: 4400mAh

Bluetooth Specifications

• Bluetooth reception: 5.0, SBC/LDAC
• Bluetooth transmission: 5.0, SBC/aptX/aptX HD/LDAC/LHDC

Headphone output

• Balanced output power 1: L+R≥1100mW+1100mW (322, THD+N< 1%, 6Vrms, Super High Gain Mode)
• Balanced output power 2: L+R≥900mW+900mW (320, THD+N<1%, 5.4Vrms, High Gain)
• Balanced output power 3: L+R≥240mW+240mW (3000, THD+N< 1%, 8.5Vrms, Super High Gain Mode)
• Balanced output power 4: L+R≥165mW+165mW (3002, THD+N <1%, 7Vrms, High Gain)|
• Single-ended output power 1: L+R≥470mW+470mW (320, THD+N<1%, 3.9Vrms, Super High Gain Mode)
• Single-ended output power 2: L+R≥300mW+300mW (322, THD+N<1%, 3.1Vrms, High Gain)

Decoding Specifications

• Local playback: 384kHz/32bit; DSD256 (Native) USB DAC: 768kHz/32bit; DSD512 (Native)
• USB Audio: 768kHz/32bit; DSD512 (supports DoP/D2P/Native)
• Coaxial output: 384kHz/24bit; DSD128 (DOP/D2P)

Audio Parameters

• Frequency response: 20Hz~40kHz: attenuation < 3dB
• SNR: ≥117dB (A-weighted)
• Noise floor: <5.5uV (A-weighted)
• THD+N: PCM: 0.0183%; DSD: 0.0033%
• Crosstalk: ≥74dB (1kHz@32Q)