FiiO JM21 Portable Hi-Res Digital Audio Player: Redefining Portable Sound
Experience Hi-Res Audio in the Slimmest Form
Introducing the FiiO JM21, the ultimate blend of cutting-edge technology and elegant design. At just 13mm thin and weighing a mere 156 grams, the JM21 is one of the sleekest Hi-Res audio players ever created. Its striking Sky-Blue contrast design and ultra-slim frame make it as visually appealing as it is functional. With unmatched portability and sophistication, it’s your ideal everyday companion.
Precision Sound with Dual DAC Architecture
At the heart of the FiiO JM21 lies a premium dual-DAC setup featuring two high-performance CS43198 32-bit DAC chips. Paired with dual SGM8262 OPAMPs, this fully balanced architecture ensures unparalleled clarity and accuracy, delivering a rich, dynamic audio experience.
Power That Matches Performance
The JM21 doesn't just look slim—it’s a powerhouse. With a robust output of up to 700mW per channel through its balanced port, this player easily drives in-ear monitors (IEMs), headphones, and earbuds with precision. Three adjustable gain levels ensure seamless pairing with any audio gear for an optimized listening experience.
Isolated Power for Pure Sound
The JM21 employs a shielded dual-power supply system that separates the digital and analog circuits for pristine audio. By isolating the two sections, the player ensures zero interference and delivers crystal-clear sound reproduction.
Powerful Snapdragon Processor with Open Android OS
Powered by the octa-core Snapdragon 680 SoC, the FiiO JM21 offers a silky-smooth user experience, even during multitasking. The open Android 13 OS lets you install and enjoy your favorite streaming apps, making this device perfect for audiophiles who demand flexibility and performance.
Next-Level Digital Audio Purification
FiiO's proprietary DAPS (Digital Audio Purification System) takes your listening experience to new heights. With 5th-generation FPGA architecture and dual independent crystal oscillators, the JM21 bypasses Android SRC limitations to ensure pure, unaltered signal processing. Whether you’re using the FiiO Music app, Apple Music, or any other lossless audio platform, you’ll enjoy audio fidelity like never before.
All-Day Listening, Uninterrupted
Forget battery anxiety—the FiiO JM21 offers up to 12.5 hours of continuous playback on a single charge. Whether you're commuting, working, or relaxing, the JM21 keeps your music going all day long.
Why Choose the FiiO JM21?
Ultra-Slim & Lightweight: 13mm thickness, 156 grams weight.
Premium Dual-DAC Performance: Dual CS43198 32-bit DAC chips with balanced architecture.
High Output Power: 700mW per channel with three gain levels.
Smooth Performance: Snapdragon 680 chipset with Android 13 OS.
Pure Audio Processing: Shielded dual-power design and DAPS technology.
Long Battery Life: Enjoy up to 12.5 hours of playback.
Upgrade your portable audio experience with the FiiO JM21—where sleek design meets unmatched sound performance.
| Dual CS43198 DAC Specifications | |
|---|---|
| DAC Chipset | Dual CS43198 |
| Audio Architecture | Fully Balanced |
| Amplifier Design | Dual-OPAMP |
| Processor | New Octa-Core Snapdragon 680 SoC |
| Audio Crystal Oscillator | Customized Dual-Femtosecond |
| Output Power | 700mW Per Channel |
| Gain Levels | Three Gain Levels |
| Design | 13mm Ultra-Thin with 4.7” HD Screen |
| Bluetooth Connectivity | Two-Way Hi-Definition |
| Battery Life | 12.5 Hours |
| Operating System | Open Android 13 OS |
| Proprietary Design | DAPS No SRC Design |
| Headphone Outputs | 4.4mm + 3.5mm Dual |
| Other Outputs | SPDIF, USB, LO |
| Power Supply | Segmented with Shielded Partitions |
- FiiO JM21 Portable High-Resolution Digital Audio Player
- Screen Protector (pre-installed)
- Silicone Case (pre-installed)
- USB A to C Cable
- Quick Start Guide
Item Ships from our UK Warehouse - Typical delivery is 3 - 5 business days for mainland UK. OTIC can be contacted for updates.
Free shipping on all baskets over £250.
We offer a refund on any unused items, subject to our returns policy.
Click here to view all delivery & returns info - including shipping, tax, and duty information for International Customers.
FiiO JM21 – Frequently Asked Questions
What DAC chips power the FiiO JM21 and what sound signature do they deliver?
The JM21 uses dual Cirrus Logic CS43198 DAC chips paired with SGM8262 op‑amps in a fully‑balanced audio design, delivering clean, detailed, and punchy sound with tight bass and smooth treble.
Does the FiiO JM21 support Android 13 and major streaming apps like Apple Music and Tidal?
Yes—JM21 runs Android 13 with Google Play support and also includes FiiO’s app store. It reliably handles streaming apps like Apple Music, TIDAL, Qobuz, and more.
How long does the FiiO JM21 battery last in single‑ended vs balanced mode?
The JM21 offers up to ~12.5 hours on the 3.5 mm single‑ended output and around ~9.5 hours using the 4.4 mm balanced output under normal listening conditions.
Can the FiiO JM21 drive IEMs and portable headphones, and what power output does it provide?
Yes—JM21 delivers approximately 245 mW+ per channel (single‑ended) and 700 mW+ per channel (balanced) into 32 Ω loads, sufficient for most IEMs and mid‑tier headphones.
What Bluetooth codecs does the FiiO JM21 support for streaming and receiving audio?
It supports both transmission and reception modes with SBC, AAC, aptX, aptX HD, LDAC and LHDC—making it versatile as both a source and a Bluetooth receiver.
Can the FiiO JM21 operate as a USB DAC and what formats does it support?
Yes—the JM21 functions as an asynchronous USB DAC supporting PCM up to 384 kHz/32‑bit and native DSD256 via USB‑C output.
What are the physical dimensions, weight, and materials of the FiiO JM21?
It measures approximately 120.7×68×13 mm, weighs around 156 g (170 g with case), and features an aluminum alloy frame with a plastic rear panel.
Does the FiiO JM21 support multiple gain modes and what are they used for?
The JM21 offers three gain levels (Low, Medium, High), allowing fine-tuning of output volume and power for different headphones or IEM sensitivities.
What accessories come included in the UK retail package of the FiiO JM21?
The UK bundle includes: JM21 DAP, transparent plastic case, PET screen protector, USB‑C cable, quick-start guide, and warranty card.
How thin and portable is the FiiO JM21 compared to other portable DAPs?
With just 13 mm thickness and a compact design weighing 156 g, the JM21 is one of the slimmest and lightest high‑res DAPs, perfect for day‑to‑day portability.
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