Choosing a digital audio player means deciding what you will actually carry and connect: a simple portable unit, an Android-based player, or a Sony Walkman with a fuller set of named audio formats. The four listed prices span $380.00, so paying more only makes sense when the storage, codec, format, battery, or connection detail matches your listening setup. Condition matters too: the group includes used and open-box units.
Quick take
Start with your listening setup, then weigh format, connection, storage, battery, and condition details. The four choices cover a portable brief, connected listening, and two Sony Walkman approaches. Use the matrix for the fastest match, then read each note for the concrete limitation that may change the call.
Listed-price comparison
| Player | Listed price | Price bar |
|---|---|---|
| SHANLING M0S | USD 85.99 | |
| SHANLING M3X | USD 137.00 | |
| Sony NW-ZX707 Walkman | USD 465.99 | |
| Sony Walkman NW-A25 | USD 126.00 |
Decision matrix
- Portable Bluetooth and MP3: SHANLING M0S. The listed combination keeps the use case direct.
- Android with Wi-Fi: SHANLING M3X. Its title makes that platform and connection pairing explicit.
- Named audio formats and Bluetooth codecs: Sony NW-ZX707. The format list includes FLAC, WAV, ALAC, AIFF, DSD, APE, and MQA, while the codecs include LDAC and aptX HD.
- Walkman with microSDXC expansion and a stated long MP3 playback figure: Sony NW-A25. The described storage approach combines built-in capacity with card expansion.
Product notes
SHANLING M0S

The SHANLING M0S fits a shopper looking for the hi-res player described in its title, with a black finish and a clearly named Shanling M0s model. That focused description makes it easy to place in a simple carry-along setup. The limitation is condition: the unit is listed as used. The description also says it comes with a USB charger, no additional accessories, and is sold as shown. Choose M0S when that focused setup suits your routine; the charger-only bundle is a concrete constraint for anyone expecting a fuller accessory package.
SHANLING M3X

SHANLING M3X earns attention for its concrete headphone connection details: it has a headphone jack, with 3.5mm and 4.4mm connectivity listed. The 32GB and black title phrases further identify the unit without requiring a sound-quality claim. Its limitation is the used condition. Electrical appliances are designed for Japanese outlets, and the device is set to Japanese by default, details that may shape the setup for some buyers. Pick M3X when those headphone-connection details are central to the listening setup; the outlet and default-language information is the practical trade-off to weigh.
Sony NW-ZX707 Walkman

Sony NW-ZX707 fits shoppers who want broad named audio-format and wireless specifications. It includes MP3, WMA, AAC, FLAC, WAV, HE-AAC, ALAC, AIFF, DSD, APE, and MQA, along with a headphone jack, Bluetooth 5.0, and codecs including LDAC, aptX, aptX HD, AAC, and SBC. The title also gives 64GB, and battery life is stated as up to 25 hours. Its limitation is the USD 465.99 listed price, which sits $380.00 above the SHANLING M0S. Choose it when the Sony Walkman title and extensive format/codec detail are central to the decision.
Sony Walkman NW-A25

Sony Walkman NW-A25 fits a buyer who wants the Walkman name alongside expansion and processing features. It has 16GB of built-in storage, microSDXC card expansion, DSEE HX, and S-Master HX. The title calls out Hi-Res Music, keeping the player's role easy to identify. The limitation is the open-box condition, while the 16GB built-in figure sets a clear onboard-storage expectation before using card expansion. Choose NW-A25 when the Walkman identity and expansion details align with the way you organize music; the listed condition remains the main qualifier.
Final recommendation by use case
- For straightforward portable Bluetooth/MP3 listening: choose SHANLING M0S. It is the direct match for that use case, with a focused portable-player title.
- For Android DAP use with Wi-Fi: choose SHANLING M3X. The title makes that platform and connection combination explicit, making it the natural match for that setup.
- For a Sony Walkman with 64GB in its title: choose Sony NW-ZX707. That concrete storage phrase gives this use case a clear identity.
- For a Walkman with the stated long MP3 playback figure: choose Sony NW-A25. It is the direct fit when playback endurance is the deciding use case.
Match the model to the listed feature that matters most for your headphones and music library, rather than treating the price range as the entire decision.