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Finish: Gold
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€699
Available on order
Delivery on October 20, 2026 (free)
Fast delivery: on October 17, 2026
Notify me when it's back in stock
Protect your product
+€169
Accidental damage + breakage + theft + oxidation cover for 3 yearsWhat are the benefits?

Specifications and features

AACAirPlayAmazon MusicAndroidApple MusicBluetoothDeezerDLNADSDHi-Res AudioLDACQobuzSpotifyTidalUSBUSB-CWi-Fi

Overview

Technical specifications

Digital-to-analog conversion

  • 24-bit passive R2R DAC
    • Matched network of 192 resistors
    • Non-oversampling conversion (native R2R approach)
  • 4-channel architecture in fully differential topology
  • Supported formats: up to 32-bit / 768 kHz and DSD512
  • All-to-DSD mode: conversion of all streams to DSD

Amplification

  • Configuration: 8 operational amplifiers in parallel
  • End-to-end balanced topology
  • Output power
    • 4.4 mm balanced jack: up to 1100 mW
    • 3.5 mm single-ended jack: up to 470 mW
  • Separation of analog / digital circuits

System and interface

  • Operating system: Android 13
  • Processor: Qualcomm Snapdragon 680
  • RAM: 8 GB
  • Internal storage: 128 GB (expandable via microSD up to 2 TB)
  • Operating modes
    • Android
    • Pure Music
    • Roon Ready
    • Bluetooth
    • AirPlay
    • DLNA

Streaming and apps

  • Access to the Google Play Store
  • Compatible streaming services: Spotify, Deezer, Qobuz, Tidal, Apple Music, Amazon Music
  • Network protocols: DLNA / UPnP
  • FiiO Link function (remote control)

Wireless connectivity

  • Dual-band WiFi 2.4 / 5 GHz
  • Bidirectional Bluetooth 5.0
  • Supported codecs: SBC, AAC, aptX, aptX HD, LDAC, LHDC
  • Hi-Res Audio Wireless certification
  • Apple AirPlay compatible

Connectivity

  • USB-C (x2)
    • USB Audio / USB DAC / data transfer
    • Charging and desktop mode
  • Outputs
    • 3.5 mm jack: headphone / line / optical / coaxial
    • 4.4 mm balanced jack: headphone / line

Screen and ergonomics

  • 14 cm (5.5-inch) multi-touch IPS screen
  • Resolution: 1440 x 720 px (312 ppi)
  • Display: 16 million colors
  • Physical controls
    • Rotating volume wheel
    • Playback / navigation buttons
  • Dedicated desktop mode

Power supply and battery life

  • Battery: 4400 mAh
  • Battery life
    • Up to 14 h (3.5 mm output)
    • Up to 12 h 30 (4.4 mm output)
  • Fast charging: approximately 1 h 30 (12 V / 1.5 A)
  • Desktop mode: optimized mains power supply

Advanced functions

  • 10-band parametric equalizer
  • Selectable digital filters
  • Configurable oversampling
  • Use as an external USB DAC
  • NAS compatible / network playback

General information

  • Aluminum chassis
  • Format: portable audiophile player
  • Interface: touchscreen and physical controls

Frequently Asked Questions

What is the difference between the M33 R2R and the M23?

The M23 used delta-sigma DAC chips (ESS). The M33 R2R adopts a discrete resistor R2R converter developed by FiiO, a totally different technology that produces a more organic sound rendering. It inherits the M27’s DAPS clocking system, has 8 GB of RAM (versus less on the M23), moves to Android 13, and gains battery life.

Does NOS mode degrade audio quality?

No. NOS mode (non-oversampling) preserves the signal at its original sampling rate, without additional digital filtering. The rendering is more direct, with a warmer and more fluid character. OS mode (with oversampling) delivers a cleaner, more analytical sound. Both are aesthetic choices, not quality compromises.

Can the M33 R2R drive hard-to-power headphones?

With 1100 mW per channel from the balanced 4.4 mm output and four gain levels, the M33 R2R can drive most planar and high-impedance headphones. Desktop mode, powered from mains, unlocks even more power for the most demanding loads.

Does Auto EQ work with earphones from other brands?

The integrated Auto EQ is calibrated to the target curves of FiiO IEMs and headphones. It does not offer automatic profiles for models from other brands, but the 10-band parametric equalizer allows precise manual adjustments compatible with any transducer.

Can the M33 R2R be used as a USB DAC with a computer?

Yes. Connected via USB-C to a computer, the M33 R2R works as an external DAC/amp and supports PCM up to 768 kHz / 32-bit and native DSD512, thanks to its XMOS XU316 interface.

User reviews

Lucas

Excellent and surprising. I can’t give it 6 stars, but this product deserves them.
Excellent because this portable player can bring out the very best in any track, whether it’s Debussy’s Clair de Lune, the Red Hot Chili Peppers’ Can’t Stop, Massive Attack’s Angel or Peggy Lee’s Fever.
Then there’s the question of which headphones to pair it with. Personally, I underestimated what it needed with the Meze 99 Classic v2. The detail is definitely there and the soundstage is good, but sadly the bass doesn’t come through strongly enough. So my advice is to try quite a few pairs with this incredible little device, because its ultra-precise clock and R2R DAC produce sumptuous bass.
And I said it was surprising...
I planned to use it at my desk simply as a transport for my FLAC files, connected to my external R2R DAC, until I could get a dedicated transport.
And then I couldn’t believe my ears. Soundstage width and depth, bass,dynamics, transients, micro-details, sound texture—everything improved considerably compared with the streaming I was getting from a Wiim Ultra.
At first I put it down to the higher quality of my FLAC files. Then, at one point, I decided to compare the same streaming platform through the two sources: the M33 via the DAC’s coaxial input and the Wiim Ultra via its USB input.
Help, I heard exactly the same difference. Since then, I can’t listen to my Wiim!
An important point for anyone wanting to do the same: not all 3.5 mm jack-to-coaxial input cables work. I found that out with an Ohlenbach model. In the end, I ordered a Fiio model from China, as I unfortunately couldn’t find one in this country.
I’m still thinking of buying the Eversolo T8 transport, which seemed like such a sensible choice, but now I’m having doubts. Will I hear an improvement?

Comment from September 27, 2026 — Experience from June 26, 2026

Automatically translated — Show original (French)
Excellent et surprenant. Je ne peux pas mettre 6 étoiles mais ce produit le mérite.
Excellent parce que ce baladeur est capable de tirer la substantifique moelle de n'importe quel morceau, que l'on parle de Clair de Lune de Debussy, de Can't stop des Red Hot Chili Peppers, d'Angel de Massive Attack ou de Fever de Peggy Lee.
Après, il y a la question du casque, à lui associer. Personnellement, j'ai vu un peu juste avec un Meze 99 Classic v2. Les détails sont bel et bien là et la spatialisation est bonne, mais les basses ne sont hélas pas assez présentes. Donc mon conseil, faites pas mal d'essai avec cette incroyable petite bête car l'horloge hyper précise et le DAC R2R, cela donne des basses somptueuses.
Et je disais surprenant...
Je comptais utiliser en mode bureau en tant que simple transport pour mes fichiers FLAC en le reliant à mon DAC externe également R2R, en attendant d'acquérir un vrai transport dédié.
Et là, je n'en ai pas cru mes oreilles. Largeur et profondeur de la scène sonore, basses,dynamique, transitoires, micro détails texture des sons, tout s'est considérablement amélioré par rapport au streaming que j'obtenais à partir d'un Wiim Ultra.
J'ai d'abord mis cela sur le compte de la meilleure qualité de mes fichiers FLAC. Puis à un moment, je me suis dit que j'allais comparer la même plateforme de streaming sur les deux sources, le M33 sur l'entrée coaxiale du DAC et le Wiim Ultra sur l'entrée USB.
Au secours, j'avais exactement la même différence. Depuis il m'est impossible d'écouter mon Wiim !
Précision importante pour celles et ceux qui voudraient faire la même chose, tous les câbles jack 3.5 vers une entrée coaxiale ne fonctionnent pas. J'en ai fait l'expérience avec un modèle Ohlenbach. Bref j'ai fini par commander en Chine un modèle Fiio malheureusement introuvable dans ce pays.
Aujourd'hui, j'envisage toujours d'acheter le transport Eversolo T8 qui me semblait tellement pertinent, mais j'ai comme un doute. Aurai-je une amélioration audible ?

Torsten

I'm thrilled! Used the FIIO X5 for many years… the M33 R2R is worlds apart… the right decision!

Comment from September 04, 2026 — Experience from August 24, 2026

Automatically translated — Show original (German)
Ich bin begeistert! Habe viele Jahre den X5 von FIIO genutzt… es sind Welten zum M33 R2R… richtige Entscheidung!

Eduardo

excellent product with one limitation: the manual is too brief!!!

Comment from August 19, 2026 — Experience from August 08, 2026

Automatically translated — Show original (French)
excellent produit avec une restriction: le manuel est trop succint!!!
  • Eco-contribution included in the sale price.
  • GTIN / EAN: 6953175761327
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