Uploaded July 2026 | Updated September 2026, 2 days ago

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I've been reviewing digital audio players for the better part of 10 years now. And they all sound the same. But I always wondered if an R2R DAC would make the difference... This is my review of the Fiio M33 R2R.

See the Fiio M33 R2R on...
- Amazon: amzn.to/44vUCLQ
- AliExpress: https://s.click.aliexpress.com/e/_c2ur19Tl

And this EQ simulates the effect of enabling NOS mode on the M33. Use the "Compare A/B" button to toggle it on and off while listening to music. Hear a difference?
- squig.link/?eqModel=_EQ_Sandbox&eqFilters=djI7MCwwLDIwMDAwLDAuNCwtMi40OzAsMCwwLDAsMDswLDAsMCwwLDA7MCwwLDAsMCwwOzAsMCwwLDAsMA&amSong=1440773179

00:00 Intro
02:15 What's in the box
03:35 Build quality
08:00 I/O
12:30 Buttons
18:20 Battery & Bluetooth
22:40 User interface
29:45 Equalizer
32:10 Sound quality
43:00 Alternatives
45:20 Conclusion & Rating

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#Fiio #DAP #MP3player #IEMs #headphones #audio #audiophile #SuperReview