Choosing digital audio players means balancing your headphones, music files, operating-system preferences, and spending limit. These four options range from $85.99 to $465.99, but price alone does not determine the right fit. The useful split is between straightforward playback, Android features, wired connection choices, broader named format support, and Walkman-specific processing.
Quick take
There is no single specification to optimize. Start with the listed price, then decide whether your priority is simple MP3 playback, Android and wired connections, a long named format list, or Walkman processing. The comparison below keeps those decisions separate; the price bars indicate position only, not performance.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| SHANLING M0S PORTABLE HI-RES DIGITAL AUDIO PLAYER-BLACK | USD 85.99 | |
| SHANLING M3X Hi-Res Digital Audio Player DAP Android Bluetooth WiFi 32GB Black | USD 137.00 | |
| Sony NW-A55 Walkman Digital Audio Player Hi-Res Music MP3 English | USD 148.00 | |
| Sony NW-ZX707 Walkman 64GB Hi-Res Digital Audio Player Android DAP | USD 465.99 |
Decision matrix
- Lowest listed price: SHANLING M0S. Its black portable-player title and Bluetooth connectivity suit a simple, lower-cost route.
- Two named wired connection sizes: SHANLING M3X. It combines 3.5mm and 4.4mm connectivity with a headphone jack.
- Extensive named format and codec support: Sony NW-ZX707. It explicitly lists a wide range of audio formats and several Bluetooth codecs.
- Walkman processing features: Sony NW-A55. Its Hi-Res Audio description includes S-Master HX and DSEE HX.
Product notes
SHANLING M0S PORTABLE HI-RES DIGITAL AUDIO PLAYER-BLACK

The SHANLING M0S is the clearest fit for a shopper who wants a simple portable music player with Bluetooth and an easy-to-identify black Shanling M0s model. Its playable-media entry names MP3, keeping the use case focused for a library built around that format. The included USB charger is a practical reason to choose it for a basic listening setup. The limitations are its used condition and the package description: no additional accessories are included. Choose the M0S for straightforward MP3 playback; move to another model when wired-output details or broader format support are central.
SHANLING M3X Hi-Res Digital Audio Player DAP Android Bluetooth WiFi 32GB Black

SHANLING M3X suits a shopper who wants Android, WiFi, Bluetooth, and 32GB in one digital audio player. It also names 3.5mm and 4.4mm connectivity and a headphone jack, giving wired headphone shoppers concrete connection details to weigh. The practical limitation is setup: Japanese is the default language, and the device is designed for Japanese outlets. It is also marked used. Choose the M3X when Android and those two listed connection sizes are the deciding points; the language and outlet details make it a less straightforward fit for some setups.
Sony NW-ZX707 Walkman 64GB Hi-Res Digital Audio Player Android DAP

Sony NW-ZX707 is the most detailed match for a library that spans many named formats. Its audio-format list includes MP3, WMA, AAC, FLAC, WAV, HE-AAC, ALAC, AIFF, DSD, APE, and MQA. It pairs that support with 64GB storage, a headphone jack, up to 25 hours of battery life, Bluetooth 5.0, and codecs including LDAC and aptX HD. The limitation is its position at the highest listed price. Choose it when those format, storage, battery, and codec details justify the larger outlay-not simply because the number is higher.
Sony NW-A55 Walkman Digital Audio Player Hi-Res Music MP3 English

Sony NW-A55 Walkman makes sense when the Walkman line and its named processing features matter more than an Android DAP label. It includes Hi-Res Audio, the S-Master HX digital amplifier, DSEE HX upscaling, and a USB cable in the box; it also has 16GB storage. A headphone jack and Bluetooth provide concrete listening connections. The main limitation is the open-box condition. Choose the NW-A55 when MP3 playback, 16GB, and Walkman processing fit your library, and when those specific features are more useful to you than Android functionality.
Final recommendation by use case
- For the lowest-price route: Choose the SHANLING M0S when MP3 playback and a USB charger meet your plan, and its used condition and limited accessory package are acceptable.
- For an Android DAP with wired headphone choices: Choose the SHANLING M3X for the Android, WiFi, 32GB, 3.5mm, and 4.4mm combination, while accounting for its Japanese-language and outlet setup.
- For the widest named audio-format list: Choose the Sony NW-ZX707 if its formats, codecs, 64GB storage, and up-to-25-hour battery detail matter enough to support the highest listed price.
- For Walkman processing: Choose the Sony NW-A55 when Hi-Res Audio, S-Master HX, DSEE HX, and 16GB storage match your library and the open-box condition suits you.
The right pick is therefore straightforward: M0S for a simple MP3-focused player, M3X for Android and connection flexibility, NW-ZX707 for extensive named format and codec support, and NW-A55 for a Walkman-centered feature set.