HiFiLoop buying notes

MODEL NOTES · ANDROID DAP

FiiO M21

The FiiO M21 is an Android digital audio player for local files and app-based listening. Compare its configuration below, then review the actual photos and notes of any available unit.

Manufacturer specification

FiiO publishes the M21 as an Android 13 player on Snapdragon 680, with a 4.7-inch display, 4 GB RAM, 64 GB internal storage, and microSD expansion. The audio path uses four CS43198 DACs. Headphone and line outputs are 3.5 mm and 4.4 mm. USB data/charging and POWER IN are separate ports. A cassette-style case is optional and is not automatically included. M21 is a different model from JM21; FiiO lists both. Source: fiio.com/m21 and fiio.com/m21_parameters.

What to verify on a used unit

Confirm the exact model label is M21, not JM21 or a nearby FiiO player. Then check which outputs work, the microSD slot and the condition of the buttons, and which cables or case actually ship with that item. Record the Android and firmware versions on the unit, and check any app you rely on with that configuration. Cosmetics use A–D independently from function. Charging can be observed; a full runtime test is not standard. Open-box is not New. New is factory-sealed / unopened.

Check availability for FiiO M21

• All available gear
• FiiO brand notes
• Portable players
• Used DAP battery notes
• Condition guide