BUYING GUIDES
Buying used HiFi, made clearer.
Start with the kind of gear you need. Check the actual unit, its condition and included kit, then choose available gear or request an exact model.
CHOOSE YOUR GEAR
What to check before buying.
Portable Players
Streaming or local files, outputs, storage, charging observations and the included kit.
Read player buying notes ↗DACs & Amps
Source connections, headphone outputs, power arrangements and the role in your setup.
Read DAC and amp notes ↗Headphones
Pads, headband, hinges, cable connections and the exact model or revision.
Read headphone notes ↗IEMs & Earphones
Fit, nozzles, filters, earpiece connectors, cables and included tips.
Read earphone notes ↗Sources & Streamers
Disc formats, digital outputs, voltage, app support and supplied accessories.
Read source buying notes ↗Cables & Accessories
Exact fit, connector type, length, wear and which parts are actually included.
Read accessory notes ↗MODEL & OWNERSHIP NOTES
Go into the details.
Exploring FiiO
Choose between players, DAC/amps and earphones, then narrow down the model.
Read FiiO brand notes ↗FiiO M21 buying notes
Manufacturer information, used-unit checks and links to current availability.
Explore the M21 guide ↗Understanding a used DAP battery
What advertised runtime tells you, and how to read observations for an actual unit.
Read battery notes ↗