Remarkably thin
Just 13mm thick and 156g, with a 4.7-inch HD screen.
FIIODIGITAL AUDIO PLAYER
FiiO JM21 Portable High Resolution Digital Audio Player - BLACK (Faulty: a line down the screen)
Slim, stylish and powerful.
A 13mm-thin Android 13 player with dual CS43198 DACs, a Snapdragon 680 and up to 700mW per channel from 3.5mm and 4.4mm.
Regular price
£107.61
£179.99
Save £72.38
Unit price
Order now for next day delivery, with you by Tuesday 27 October.
Clearance productKnown fault: stated below
Faulty: A line down the screen
It has a known fault: a line down the screen. We've told you about it before you buy, so that fault, as described, isn't one you can claim for afterwards. Your other legal rights, including the 14-day right to cancel an online order, are not affected. It comes with all its accessories and the manual. Apart from the fault, it has been checked and tested.
It has a known fault: a line down the screen. We've told you about it before you buy, so that fault, as described, isn't one you can claim for afterwards. Your other legal rights, including the 14-day right to cancel an online order, are not affected. It comes with all its accessories and the manual. Apart from the fault, it has been checked and tested.
The original retail box, in good condition (it may have been opened).
The printed guide or manual is included (where the maker supplies one).
It has the fault stated in the listing. Apart from that fault, it has been checked and tested.
Everything listed under In the box is included.
It starts up and runs as it should.
THE AMP3 DIFFERENCE
Great gear. Even better service.
Order by 2pm, Monday to Friday, for next day delivery. Destination and stock availability apply.
Not sure it’s your perfect match? Talk to an audio specialist
FiiO JM21 Portable High Resolution Digital Audio Player - BLACK (Faulty: a line down the screen)
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Hand-picked pairings for this product. Choose one — we'll add them together.
MEET THE JM21
Slim, stylish and powerful.
A 13mm-thin Android 13 player with dual CS43198 DACs, a Snapdragon 680 and up to 700mW per channel from 3.5mm and 4.4mm.
Fully balanced sound
Dual CS43198 DACs and dual op-amps deliver up to 700mW per channel.
Smooth Android 13
An octa-core Snapdragon 680, two-way Bluetooth and up to 12.5 hours of battery.
Read the full description
Condition: Faulty: A line down the screen
What this means: It has a known fault: a line down the screen. We've told you about it before you buy, so that fault, as described, isn't one you can claim for afterwards. Your other legal rights, including the 14-day right to cancel an online order, are not affected. It comes with all its accessories and the manual. Apart from the fault, it has been checked and tested.
The FiiO JM21 is a slim, affordable Android music player, just 13mm thick and 156g, with two Cirrus Logic CS43198 DACs in a fully balanced design and up to 700mW per channel from its 4.4mm output. A Snapdragon 680 runs Android 13 smoothly, so your streaming apps sit alongside your own files on a microSD card.
Fully balanced sound
Two CS43198 DACs and two SGM8262 op-amps form a fully balanced circuit, with separately shielded digital and analogue power supplies. Three gain levels, each with its own volume curve, suit everything from earphones to over-ear headphones, and FiiO’s DAPS system keeps every app playing at its original sample rate.
| Outputs | 4.4mm balanced (700mW @ 32Ω) and 3.5mm (245mW @ 32Ω), both also line outs; 3.5mm doubles as coaxial out |
|---|---|
| Platform | Android 13, Snapdragon 680, 3GB RAM, 32GB storage (about 22GB free), microSD up to 2TB |
| Modes | Android, Pure Music, USB DAC (up to 384kHz/32-bit) and Bluetooth receiver |
| Wireless | Wi-Fi with DLNA and AirPlay · two-way Bluetooth 5.0 (sends LDAC, LHDC, aptX HD, aptX, AAC, SBC) |
| Battery | Up to 12.5 hours (3.5mm) or 9.5 hours (4.4mm) |
| Screen and size | 4.7-inch 750 × 1334 · 120.7 × 68 × 13mm, about 156g |
Good to know
- Need more space and battery? The JM21 with 4GB + 64GB has double the storage and up to 16 hours of playback.
- In USB DAC mode latency is slightly higher, so it is better for music than video.
- In the box: screen protector and silicone case (both fitted), USB-A to USB-C cable and quick start guide.
In the box
- FiiO JM21 Portable High-Resolution Digital Audio Player
- Screen Protector (pre-installed)
- Silicone Case (pre-installed)
- USB A to C Cable
- Quick Start Guide
Downloads
THE FINER DETAILS
Built for
better listening.
Know what you’re choosing.
Find the right fit for your setup.
- DAC
- 2 × Cirrus Logic CS43198
- Operating system
- Android 13 (Snapdragon 680)
- Headphone outputs
- 3.5mm single-ended · 4.4mm balanced
- Output power
- 700mW/ch @ 32Ω balanced · 245mW/ch @ 32Ω single-ended
- Frequency response
- 20Hz–80kHz (<0.7dB)
- Hi-res support
- PCM 384kHz/32-bit · DSD256 native
- Battery
- 2,400mAh · up to 12.5 hours (3.5mm), 9.5 hours (4.4mm) · about 2 hours to charge
- Storage
- 32GB (about 22GB usable) · 3GB RAM · microSD up to 2TB
- Screen
- 4.7" 750 × 1334
- Bluetooth
- 5.0 two-way
- Bluetooth codecs
- Transmit: LDAC, LHDC, aptX HD, aptX, AAC, SBC · receive: LDAC, AAC, SBC
- Wi-Fi & streaming
- 2.4/5GHz · DLNA, AirPlay
- Gain modes
- Low / medium / high, each with its own volume curve
- EQ & app control
- FiiO Link: Android Wi-Fi and Bluetooth control, iOS Bluetooth control
- Signal-to-noise ratio
- ≥124dB (3.5mm, A-weighted) · ≥129dB (4.4mm, A-weighted)
- Distortion (THD+N)
- <0.0012% (3.5mm, 1kHz/-4dB @32Ω) · <0.0006% (4.4mm, 1kHz/-4dB @32Ω)
- Output impedance
- <1Ω (3.5mm) · <1.5Ω (4.4mm)
- Size (H × W × D)
- 120.7 × 68 × 13mm
- Weight
- 156g
- Amplification
- 2 × SGM8262
- Line outputs
- 3.5mm & 4.4mm (shared)
- Digital outputs
- Coaxial (3.5mm, shared) · USB audio
Specifications are based on manufacturer information and may change. Battery life varies with use and settings.
The press, on the JM21
Independent ears.
Their verdict.
A different perspective on your next listen.
07 / Expert reviews
the FiiO JM21 is basically a redefinition of what can be achieved at the entry level
Simon Lucas
Read review
the JM21 digital audio player is a really impressive achievement
Simon Lucas
Read review
a fantastic player that'll please newcomers as well as long-time fans of head-fi
Tom Morgan-Freelander
Read review
The sound comes across as musical and clear.
Lynn
Read reviewHeadfonia
Dual Cirrus Logic chips, a full Android experience, solid battery life, a slim design, and, most importantly, excellent sonic performance.
NanoTechnos
Read revieweCoustics
ample output power for the money, a clean and neutral sound, excellent versatility with full Android, strong connectivity
Ian White
Read reviewPorta-Fi
8.9 / 10
it delivers a product that feels accessible without compromising on performance
Goh Beng Yeow
Read reviewSelected excerpts from published reviews. Scores are each publication’s own. Follow the links for their full verdicts.
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GOOD TO KNOW
A little clarity.
A confident choice.
Something else on your mind?
How does free delivery work?
Every UK order has a free delivery option, and orders of £50 or more qualify for free next day delivery. Order by 2pm, Monday to Friday, for next day delivery; orders placed after 2pm, at the weekend or on a bank holiday are dispatched on the next working day. Stock availability and destination also affect arrival — check the options shown at checkout.
Pre-orders ship when stock arrives; the next day service starts after dispatch. Full delivery information
What if it’s not right for me?
Return within 14 days for any reason, or within 30 days if faulty, with free return postage. See our full Returns Policy for conditions and how to start a return.
Can you help me choose headphones?
Absolutely. Tell us what you listen to and the headphones you have — or the ones you’re considering — and we’ll help you find a suitable pairing. Chat with us
How do I request a Price Beat?
Use the Price Beat option on this page to send us the competing offer. The team will review your request; it isn’t an automatic discount. How Price Beat works
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