Short answer: a tie on sound quality, though neither ranks well in its class. Both are rated 2.6/5 (#137 and #135 of 175 medium speakers) at nearly the same price ($49.99 vs $49.99), so choose on features and fit. Both are rated below 3.0/5 among the 175 medium speakers, so if sound quality matters, consider the EarFun Uboom L instead, ranked #2 at $49.79.
The case for the Monster S380: Rated for 20 hours with IPX6 water resistance, Bluetooth 6.0, aux and microSD inputs, a speakerphone microphone, TWS stereo pairing and a carry lanyard for about $50. The catch: No measurements or substantive reviews, so its rating is estimated, and the 40 watt claim is unverified.
What the W-King D8 Mini does well: 30W output with switchable indoor/outdoor EQ modes. The tradeoff: Recessed midrange, harsh treble.
Buy the Monster S380 or the W-King D8 Mini on features: they are rated the same for sound quality at close to the same price.
About the ratings: the Monster S380’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 2.2 to 3.0, so this verdict could change once it is measured.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Monster S380 | W-King D8 Mini | |
|---|---|---|
| Price | $49.99 | $49.99 |
| Ranked | #137 of 175 in Medium Size Portable Bluetooth Speakers Estimated | #135 of 175 in Medium Size Portable Bluetooth Speakers |
| Amplifier Power | 40W | 30W |
| Battery Life | 20 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| IP Rating | IPX6 | IPX6 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 6.0 | 5.0 |
| Aux Input | Yes | Yes |
| MicroSD Playback | Yes | Yes |
| TWS | Yes | No |
| Built-in Microphone | Yes | Yes |
| Strap | Yes (lanyard) | - |
| App | No | No |
| Power Input | USB-C | USB-C |
| Bass Extension (-10dB) | - | 63Hz |
| Maximum SPL | - | 100dB (measured by Alan Ross Reviews) |
| Weight | - | 2.8 lbs (1260 g) |
| Dimensions | - | 9.9” x 3.7” x 3.7” (251 x 94 x 94 mm) |
| Drivers | - | 2x 70mm woofers, 2x 30mm tweeters |
| Stereo | - | Yes |
| Omnidirectional | - | No |
| Digital Aux Input | - | No |
| Bluetooth Codecs | - | SBC (inferred; additional codecs unverified) |
| EQ | - | Yes (2 modes - Indoor/Outdoor) |
Related Speaker Comparisons
More top alternatives to W-King D8 Mini:
- EarFun Uboom L vs W-King D8 Mini
- Soundcore Motion 300 vs W-King D8 Mini
- Soundcore Motion+ vs W-King D8 Mini
- Soundcore Boost “upgraded” 2021 vs W-King D8 Mini
- Minirig 4 vs W-King D8 Mini
Prices on this page were last checked October 11, 2026 at 4:59 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Monster S380: $49.99 Estimated Amazon $49.99 eBay
Pros: Rated for 20 hours with IPX6 water resistance, Bluetooth 6.0, aux and microSD inputs, a speakerphone microphone, TWS stereo pairing and a carry lanyard for about $50.
Cons: No measurements or substantive reviews, so its rating is estimated, and the 40 watt claim is unverified. It is made under license by Oraolo rather than Monster itself, and there is no app or EQ.
Full Monster S380 review and specifications →
| Released | 2026 (this year) |
|---|---|
| Amplifier Power | 40W |
| App | No |
| Aux Input | Yes |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Version | 6.0 |
| Built-in Microphone | Yes |
| IP Rating | IPX6 |
| MicroSD Playback | Yes |
| Power Input | USB-C |
| Strap | Yes (lanyard) |
| TWS | Yes |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
W-King D8 Mini: $49.99 W-King $49.99 eBay
Pros: 30W output with switchable indoor/outdoor EQ modes. IPX6 rated with a 5000mAh battery. Measured bass extension of 63Hz (-10dB).
Cons: Recessed midrange, harsh treble. Bass doesn’t go as deep as others.
Full W-King D8 Mini review and specifications →
| Released | Feb 2020 (6 years ago) |
|---|---|
| Amplifier Power | 30W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 63Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.9” x 3.7” x 3.7” (251 x 94 x 94 mm) |
| Drivers | 2x 70mm woofers, 2x 30mm tweeters |
| EQ | Yes (2 modes - Indoor/Outdoor) |
| IP Rating | IPX6 |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 2.8 lbs (1260 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- W-King D8 Mini vs Soundcore Flare 2
- W-King D8 Mini vs Monster Shock S22
- W-King D8 Mini vs Sony SRS-XB30
- W-King D8 Mini vs B&O Beosound Explore
- W-King D8 Mini vs Tribit Stormbox Mini+
- W-King D8 Mini vs Marshall Emberton II
- W-King D8 Mini vs Sony SRS-XE200
- W-King D8 Mini vs Marshall Emberton III
- See all 97 comparisons