Reference price is for price anchoring only. Final quote depends on condition, accessories, version, stock, and destination.
The FiiO M21 is a compact Android digital audio player for listeners who want a self-contained portable source instead of depending on a phone dongle. It can serve as a pocket DAP, a USB DAC, a Bluetooth receiver, or a transport into another DAC, with 3.5 mm and 4.4 mm output options for common portable headphones and IEMs. HiFiLoop uses this page for private used / open-box quote requests and model matching.
| Model | FiiO M21 |
|---|---|
| Category | Android DAP |
| Hardware platform | Qualcomm Snapdragon 680; CS43198 x4 DAC; OPA1692 x2 + SGM8262-2 x2 amplifier stage |
| System / memory | Android 13; 4GB RAM; 64GB internal storage, about 52GB available |
| Display | 4.7-inch 750 x 1334 screen |
| Outputs | 3.5 mm PO/LO/coax shared output; 4.4 mm balanced PO/LO shared output |
| Maximum format support | Local playback up to 384 kHz / 32-bit and DSD256; USB Audio up to 768 kHz / 32-bit and DSD512 |
| Battery life test | 3.5 mm output: 15 hours; 4.4 mm output: 12.5 hours, under FiiO 32 ohm MP3 test conditions |
| Output power reference | 4.4 mm: L+R >= 950 mW + 950 mW at 32 ohms, THD+N < 1%, Super High Gain mode |
| Dimensions / weight | About 68 x 121 x 17 mm; about 193 g |
A-Class confirmation guide
These notes explain how lab checks, condition records, shipping boundaries, and sourcing requests are handled before manual confirmation.
01 / Lab check
Function and condition are checked before confirmation.
Note: Final notes are based on the unit reviewed.
02 / Condition and kit
Condition is not a shortcut for every detail.
Note: Photos and written notes should be checked against the exact unit.
03 / Request details
Send the details needed for review.
Note: Details are reviewed before the next step.
04 / Sourcing path
Start the request before confirmation.
Note: Final options are confirmed through conversation.
This is a used / open-box reference page for this model. The exact unit, included kit, timing, and support terms are confirmed before payment.
Function, cosmetics, accessories, and known limitations are reviewed for the exact unit before dispatch.
Processing is normally 3-5 business days after confirmation. International delivery is commonly 7-15 days; DOA and repair support are confirmed by destination.
It is a price anchor for comparison. It is not the final quote.
Not from this page alone. HiFiLoop confirms the exact unit and timing before payment.
Yes. Share the target model, preferred condition, budget range, and destination so HiFiLoop can look for a suitable unit.
Send an offer, sourcing request, or availability check when you want exact-unit photos, accessories, condition notes, and quote details.
