Fiio HiRES Portable Digital Audio Player Black – M33R2R

FiiO presents the M33 R2R as a next-generation portable digital audio player that brings desktop-class R-2R conversion into a compact, everyday form. Combining a fully differential resistor ladder DAC, flagship-level digital processing, powerful amplification, extensive connectivity, and long battery endurance, it is engineered to deliver an authentic, engaging listening experience wherever you go. From precision clocking and advanced processing features to premium components and intelligent power management, every element is designed to balance technical excellence with real-world usability for serious audiophiles on the move.

Utilises Proprietary R-2R Resistor Array DAC For Analog Warmth And High Fidelity

FiiO M33 R2R brings its proprietary desktop-grade R-2R resistor array into a portable player for the first time, delivering the lush analog warmth traditionally associated with resistor ladder designs alongside balanced high-fidelity performance. Its fully differential 24-bit architecture uses four channels and a total of 192 precision thin-film resistors with 0.1% accuracy and low temperature drift, ensuring stable, natural playback with selectable FLAT and WARM sound profiles.

Equips Snapdragon 680 Platform With Ample Memory For Smooth Android Performance

FiiO M33 R2R runs on the Qualcomm Snapdragon 680 processor paired with 8GB RAM and 128GB ROM, providing fast operation, effortless streaming, and seamless multitasking. Built on a 6nm process with up to 2.4GHz clock speeds and Android 13 support, the platform ensures long-term stability and the performance headroom needed for future updates.

Implements XMOS XU316 USB Interface For Ultra-Low Latency And High-Res Audio

FiiO M33 R2R incorporates a dedicated XMOS XU316 chip that delivers robust USB DAC performance with extremely low latency, ensuring audio and video remain perfectly synchronised across devices. It supports high-resolution playback up to 768kHz/32-bit PCM and native DSD512 for uncompromised digital decoding.

Features Audiophile-Grade Components For Transparent And Controlled Playback

FiiO M33 R2R incorporates high-end parts including dual TI Burr-Brown OPA1637 fully differential op-amps, four TI Burr-Brown INA1620 amplifiers for minimal crosstalk, eight Rubycon film capacitors for natural mids and smooth treble, and an NJW1195A precision volume controller for ultra-low noise and accurate level adjustment.

Implements Precision Power Supply System With Multi-Rail Isolation For Clean Operation

FiiO M33 R2R uses independent power supplies for digital and analog sections, with the analog stage further divided into separate circuits for the R-2R array, pre-amp, and amplifier stages. A dual-tier voltage system activates a high-voltage rail in Super High Gain Mode to deliver up to 1100mW+1100mW output, supported by high-current MOSFETs, large energy-storage capacitors, and a 15W power management system for stable delivery.

Flagship DAPS FPGA Processing With Dual Femtosecond Oscillators For Ultra-Low Jitter Accuracy

FiiO M33 R2R employs a high-capacity FPGA-based Digital Audio Purification System with dual custom femtosecond crystal oscillators, providing an ultra-precise unified clock source derived from the flagship M27. This system minimises jitter while improving processing efficiency and supports global 10-band PEQ, SRC bypass and ALL-to-DSD conversion.

Employs Multi-Stage Partitioned Shielding For Reduced Interference Crosstalk

FiiO M33 R2R separates digital processing, R-2R conversion, amplification, and power modules into independently shielded zones. This layout significantly reduces electromagnetic interference and signal contamination, resulting in a quieter background and clearer reproduction of fine musical details.

Provides High-Capacity Battery With Fast Charging For Extended Listening Sessions

FiiO M33 R2R houses a 4400mAh battery delivering up to 15.5 hours of single-ended playback and 13.5 hours of balanced playback. Low-temperature 30W fast charging replenishes the battery in approximately 1.5 hours without overheating, ensuring dependable long-term use.

Integrates AUTO EQ System For Instant Personalised Sound Tuning

FiiO M33 R2R features an intelligent AUTO EQ function that automatically matches headphone frequency curves to create a tailored listening profile. In addition to genre presets, it allows detailed per-band adjustment for precise customisation without compromising resolution.

Equips Dual Type-C Ports With Desktop Mode And Super High Gain Output

FiiO M33 R2R includes two versatile Type-C ports enabling charging, data transfer, and audio functions simultaneously. Its patented desktop mode bypasses the battery to reduce wear during high-power use, while Super High Gain Mode delivers up to 1100mW+1100mW balanced and 470mW+470mW single-ended output per channel at 32Ω.

Supports Comprehensive Analog And Digital Connectivity For System Flexibility

FiiO M33 R2R provides 3.5mm and 4.4mm headphone outputs, matching line outputs via dedicated circuitry, coaxial SPDIF output with ultra-low jitter as low as 71.5ps, USB audio output for external DACs, and two-way high-resolution Bluetooth supporting SBC, aptX, aptX HD, LHDC, and LDAC transmission plus SBC LDAC reception.

Features Multiple Operating Modes And Custom Controls For Everyday Versatility

FiiO M33 R2R supports Android, Pure Music, AirPlay, USB DAC, and Bluetooth reception modes to suit different listening scenarios. Customisable multi-function buttons enable quick access to frequently used features, and a colour-matched leather protective case is included for durability and premium presentation.

Crafted In A Ultra-Slim Ergonomic Chassis With Color-Matched Leather Protective Case

FiiO M33 R2R features a sleek, minimalist design that balances compact dimensions with comfortable handling. It incorporates an 18:9 golden ratio body, dual-beveled edges for ergonomic grip, minimalist aesthetics, and an AG matte glass back panel for a smooth, premium feel.