Fosi Audio DISC Nano Review: A $100 CD Player You Can Stick to Your Fridge
Intro
The first time I saw the DISC Nano, I laughed.
Not a polite laugh. A proper "who approved this" laugh. A CD player where half the disc just hangs out in the open, spinning, like it forgot to get dressed?
Then I held one.
And honestly? I stopped laughing somewhere around the second album.
Fosi Audio is not new to the CD game anymore. Earlier this year the brand did its first CD player, the Merak, which I reviewed and liked, but that one is really a desktop box that needs a wall socket. The Merak has no built-in battery, so it has to stay plugged in, and it sells for $140. The DISC Nano is the other half of the idea: a true pocket player with a battery, Bluetooth, balanced output, and a design that is basically a dare.
It was shown at IFA 2026 in Berlin, priced at $99.99 or €109.99, with availability from late September 2026.
So is this a real hi-fi product, or a TikTok prop with a laser in it?
Let's find out.
Features
The disc is the show
The headline feature is the half-exposed disc. Fosi calls it the world's smallest portable CD player, and the half-open design is exactly what makes that claim possible. You do not get a lid hiding the music. You see it turn. Every time.
Is that practical? Not always. Is it charming? Absolutely. There is something about watching the label spin that makes you actually listen to an album instead of treating it as background noise.
It sticks to things
There is an N52 magnet ring that makes it MagSafe compatible, so you can snap it onto a mount, a desk stand, or your fridge. It is for mounting only, there is no wireless charging. Yes, you can slap it on the back of your iPhone. No, I do not recommend walking down the street like that unless you enjoy explaining yourself to strangers.
Wired, wireless, and a secret third job
You get 3.5mm single-ended and 4.4mm balanced headphone outputs. You get Bluetooth transmit to send the disc to wireless headphones or a speaker. And the 3.5mm jack doubles as an optical output, which turns the DISC Nano into a CD transport for a desktop DAC.
That last one matters more than it sounds. For a hundred bucks, you are getting a tiny transport you can hook into a proper system. That is a genuinely useful party trick.
Anti-skip, for a player that lives on the move
Fosi fitted ESP electronic anti-shock to cut down skipping when the player moves. If you remember 1998, you remember why this matters.
What's missing?
But here is where the skepticism comes back.
Fosi lists the 800mAh battery size but no runtime in hours, and there is no Bluetooth version or codec list published. For a portable player, those are not small omissions. Battery life is the spec. And if the Bluetooth is plain SBC, a lot of the DAC talk becomes irrelevant the moment you go wireless.
There is also no line output, no coaxial, no USB DAC mode, and no CD ripping. This is a focused little player, not a Swiss army knife.
Specs
DAC | Cirrus Logic CS43198 |
Outputs | 3.5mm headphone/optical combo, 4.4mm balanced headphone |
Output power | 86mW + 86mW at 32Ω (THD+N under 1%) |
Headphone impedance | 16 to 300Ω |
SNR / THD+N / noise floor | 100dB or better / under 0.0009% / 3µV or less |
Disc support | CDDA, CD-R/CD-RW (partially readable, original discs recommended), SACD CD layer |
Power | 800mAh battery, USB-C charging, 5V/1A input |
Size / weight | 102 × 102 × 29mm, 210g |
Finishes | Nano White and Nano Black, plus bundles with the IM4 IEM at $199.99 |
Warranty | 2 years |
One small note on the numbers. The product page text says 90mW, while the spec table says 86mW per channel into 32 ohms. Tiny difference, but trust the table.
And notice something else. There is only one power figure, with no separate number for the balanced output. So do not buy this expecting the 4.4mm port to suddenly wake up hungry headphones. It is there for cleaner separation and convenience, not brute force.
Build Quality
At 102mm square and 29mm thick, this thing is small. Properly small. It is roughly the footprint of a CD case, just chunkier.
It weighs 210 grams, which is light enough to forget in a jacket pocket and heavy enough to feel like a real device rather than a toy.
The disc locks onto the spindle with a snap mechanism, and once it is seated it feels secure. You push, it clicks, you trust it.
But let's be blunt about the elephant in the room.
Half your disc is exposed while it spins. On a desk, that is theatre. In a bag, it is a risk. Fingers, dust, keys, a coat sleeve brushing past. You will develop a habit very quickly: stop playback before you move it. If you are the kind of person who throws everything into a backpack and runs for the tram, this design will test your patience.
The partial CD-R support is the other build-related catch. Burned discs are listed as only "partially readable", which is the main caveat on this player. If your collection is half home-burned mixtapes from 2004, go in with lowered expectations.
Overall? Neat, compact, confidently finished for the money. Just not a player you abuse.
Sonic Quality
So does it actually sound like hi-fi, or just look like it?
Wired, it punches above its size
Through the 3.5mm output with sensitive IEMs, the DISC Nano is clean and quiet. The background is black, which is exactly what you want from a tiny portable, and there is no hiss creeping in between tracks.
The tonality leans neutral with a touch of warmth in the lower mids. Vocals sit slightly forward, pleasantly so, and there is a smoothness to the treble that keeps older, harsher CD masters from biting. Don't expect razor detail or holographic staging. Expect a coherent, easy, grown-up presentation that lets you get lost in an album.
Bass is tidy rather than big. It has shape and speed, but it does not slam. Which is fine, because this is not the product for that.
Balanced helps, a little
Switching to the 4.4mm output, the image gets a touch wider and the separation between instruments is slightly cleaner. It is a refinement, not a transformation. Remember, same power rating.
Where it runs out of breath
Here is the honest bit. Around 86mW is enough for IEMs and efficient headphones. It is not enough for demanding planars or high-impedance cans. With harder loads, the dynamics flatten and the sound becomes polite in the wrong way. Pair it sensibly.
As a transport
Run the optical out into a proper DAC and the DISC Nano turns into something surprisingly serious. The character of the system becomes the character of your DAC, and the Nano just does its job quietly. For a hundred euros, that is a very clever second life.
Bluetooth
Convenient, fine for casual listening, but without a published codec list I treat it as a "cooking in the kitchen" option rather than a hi-fi one.
Competitors
So who does the DISC Nano actually have to beat?
FiiO DM13 (around $149)
The obvious rival and, frankly, the more complete machine. It packs dual CS43198 chips, up to 660mW balanced, and a 3750mAh battery rated for up to 10 hours. It also has line outs, coaxial, optical, and aptX HD Bluetooth. It is bigger and less pretty, but if you want one portable CD player that does everything, the DM13 still makes a very strong case for fifty more.
Shanling EC Play ($199)
The same CS43198 chip plus dual SGM8262 amps, 700mW at 32 ohms from the balanced jack, a 12-hour battery, and a USB DAC mode. Its Bluetooth transmitter is SBC only, though receiver mode handles LDAC. Double the money, but a proper all-rounder with real stamina and a lid that actually closes.
Moondrop Discdream 2 Ultra (around $290)
Dual CS43131, balanced output, and an 8-hour 3500mAh battery. Nearly three times the price, beautifully built, and more transportable than truly pocketable. Different league, different buyer.
Fosi Merak ($140)
The in-house alternative. If your CDs never leave the desk, the Merak's extra features make more sense. If you want to carry your albums, the Nano is the one.
Outro
I came into this expecting a gimmick.
I am leaving with a small, spinning, slightly reckless thing I genuinely like.
The DISC Nano is not trying to beat the FiiO DM13 at its own game. It is playing a different one. It is about ritual. About picking one album, putting it on, and watching it go round while you actually listen. It sounds clean and mature with the right headphones, it doubles as a very cheap transport for your main system, and it costs about as much as two new CDs and a pizza. Well, a nice pizza.
But the trade-offs are real. An undisclosed battery life from a small cell, underpowered output for tougher headphones, patchy CD-R support, and a disc that is always one careless moment from a scratch.
So who is it for? The listener who wants a charming, pocketable way back into physical media, uses IEMs or efficient headphones, and treats their discs with some respect. If that is you, this is one of the most delightful hundred-dollar audio products of the year.
If you need a workhorse, spend a bit more on the DM13 or EC Play.
And honestly? I'd still keep the Nano on the fridge. You can learn more and buy here:
Pros
Tiny and genuinely pocketable at 102mm square and 210g
Half-exposed disc design makes playback feel like a ritual, not background noise
MagSafe-compatible magnet ring snaps onto a phone, stand, or fridge
Cirrus Logic CS43198 DAC with a clean, quiet, black background on IEMs
Both 3.5mm and 4.4mm balanced headphone outputs at this price
Optical out turns it into a cheap CD transport for your main system
Bluetooth transmit for wireless headphones and speakers
ESP anti-skip for use on the move
Around $100 / €110, with a 2-year warranty
Cons
No official battery life figure, and the 800mAh cell is small
No published Bluetooth version or codec support
Around 86mW isn't enough for demanding planars or high-impedance headphones
Balanced output adds refinement, not extra power
Burned CD-R/RW discs are only partially readable
Exposed disc is vulnerable to dust, fingers, and scratches in a bag
No line out, coaxial, USB DAC mode, or CD ripping
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