Choosing among digital audio players means balancing two very different jobs: a dedicated player for hi-res files and headphone listening, or a small device for simple playback, recording, and active use. The four choices run from $8.80 to $465.99, a $457.19 spread, so a higher price alone does not settle the decision. Focus first on the files and connections you use, then weigh platform, storage, condition, and portability.
Quick take
The four choices cover distinct listening briefs. Sony NW-ZX707, Sony NW-A55, SHANLING M3X, and Support 128GB Bluetooth MP4/MP3 Lossless Music Player FM Radio Recorder Sports are not aimed at exactly the same routine. The first three are framed as dedicated music players, while the last emphasizes portable MP4/MP3 playback and recording. The practical question is how much platform and playback detail you need before choosing a more specialized device.
Listed-price comparison
| Player | Listed price | Price bar |
|---|---|---|
| Sony NW-ZX707 | USD 465.99 | |
| Sony NW-A55 | USD 148.00 | |
| SHANLING M3X | USD 137.00 | |
| Support 128GB Bluetooth MP4/MP3 player | USD 8.80 |
The price bars show position within this comparison only; they do not indicate audio performance.
Decision matrix
- Wide named audio-format coverage: Sony NW-ZX707. Its format list spans MP3, WMA, AAC, FLAC, WAV, HE-AAC, ALAC, AIFF, DSD, APE, and MQA.
- Named Sony processing features: Sony NW-A55. Hi-Res Audio, the S-Master HX digital amplifier, and DSEE HX upscaling are all tied to the Walkman description.
- Android and WiFi: SHANLING M3X. The model designation pairs Android, Bluetooth, and WiFi with a 32GB player.
- Sports and recording brief: Support 128GB Bluetooth MP4/MP3 Lossless Music Player FM Radio Recorder Sports. Its title combines Sports, FM Radio, and Recorder language in one compact-player concept.
Sony NW-ZX707 Walkman 64GB Hi-Res Digital Audio Player Android DAP
The Sony NW-ZX707 suits a listener who wants a wired headphone route and wireless codec choices. It lists a headphone jack, Bluetooth 5.0, and codecs including LDAC, aptX HD, and AAC; battery life is up to 25 hours. The concrete limitation is price: at $465.99, it is the highest-priced entry here. That places the ZX707 in a deliberate, feature-led purchase lane rather than a casual MP3-only role. Its title identifies 64GB storage, while microSD, microSDHC, and microSDXC are named as compatible memory cards. Choose it when its Android DAP designation, format breadth, and connectivity list match the way you listen.
Sony NW-A55 Walkman Digital Audio Player Hi-Res Music MP3 English
The Sony NW-A55 is a straightforward Walkman pick for someone drawn to the Hi-Res Music and MP3 wording in its title. Its headphone jack and Bluetooth cover wired and wireless listening, and the configuration includes 16GB of storage. The concrete limitations are the open-box condition and that defined 16GB capacity, which may not suit a listener planning a larger local library. The upside is a clearly named Walkman format without moving to the NW-ZX707's Android DAP designation. Pick the NW-A55 when the Sony Walkman identity and simple wired-and-wireless setup matter more than adding another platform layer.
SHANLING M3X Hi-Res Digital Audio Player DAP Android Bluetooth WiFi 32GB Black
SHANLING M3X earns a place on the shortlist when physical connection choices matter. Its details list 3.5mm and 4.4mm connections alongside Bluetooth, giving headphone shoppers specific outputs to consider. The limitation is the used condition, plus a setup wrinkle: devices default to Japanese language and electrical appliances are designed for Japanese outlets; a suitable transformer is advised for use in another country. That makes the M3X a connection-focused alternative rather than a price-led decision. Choose it when the two named connection sizes are central to your headphone setup and the Android Bluetooth WiFi designation fits your intended listening routine.
Support 128GB Bluetooth MP4/MP3 Lossless Music Player FM Radio Recorder Sports
Support 128GB Bluetooth MP4/MP3 Lossless Music Player FM Radio Recorder Sports is aimed at basic, active use. It combines MP3 and WAV playback with MP3/WAV recording, bidirectional Bluetooth 4.0, and a stated weight of about 31g. The limitation is storage planning: 128GB is the maximum supported TF-card capacity, and the card is not included. Its compact dimensions are 90.5mm × 39.5mm × 10mm, reinforcing the portable-player brief. Choose it when a straightforward carry matters and the title's MP4/MP3, FM Radio, and Recorder combination is closer to your routine than a Walkman or Android music platform.
Final recommendation by use case
- For an Android DAP: choose Sony NW-ZX707. The title makes that platform explicit, and the headphone jack plus Bluetooth 5.0 provide a clear wired and wireless split.
- For Sony's named processing features: choose Sony NW-A55. S-Master HX and DSEE HX are the concrete reasons to select this Walkman model, with open-box condition as the key trade-off.
- For Android with WiFi: choose SHANLING M3X. Those two platform labels are explicit, and the 3.5mm and 4.4mm connections give headphone users a specific reason to consider it.
- For the lowest listed price and a basic portable brief: choose Support 128GB Bluetooth MP4/MP3 Lossless Music Player FM Radio Recorder Sports. Its USD 8.80 price keeps the purchase focused on simple portable playback rather than a more elaborate player setup.
