Short answer: the W-King D20. It ranks #39 of 98 boombox speakers by sound quality, rated 3.6/5, at $193; the JBL Authentics 300 ranks #44, rated 3.5/5, and costs $499.95, which makes this an easy call rather than a real tradeoff.
The W-King D20 is the louder, longer-running option. Comes with 2 wireless microphones. Alan Ross Reviews measured it at 112dB at full volume, against 100dB for the JBL Authentics 300. It is rated for 24 hours of battery against 8 for the JBL Authentics 300. It is rated IPX6, while the JBL Authentics 300 has no water resistance. The tradeoff: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks.
The JBL Authentics 300 is the lighter option. Integrates both Amazon Alexa and Google Assistant simultaneously (rare for smart speakers). At 10.8 lbs (4.9 kg) it weighs noticeably less than the W-King D20 at 14.3 lbs (6.5 kg). It links with other speakers (Wi-Fi Multi-Room), which the W-King D20 cannot. The catch: Narrow sounding, bass not as deep as others.
Buy the W-King D20. It is rated higher for sound quality than the JBL Authentics 300 and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| W-King D20 | JBL Authentics 300 | |
|---|---|---|
| Price | $193 | $499.95 |
| Ranked | #39 of 98 in Boombox Size Portable Bluetooth Speakers | #44 of 98 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (W-King app) | Yes |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | ~42Hz | 45Hz |
| EQ | Yes (App + button modes) | Yes (App EQ) |
| IP Rating | IPX6 | None |
| Maximum SPL | 112dB (measured by Alan Ross Reviews) | 100dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes | No |
| Wireless Microphones | Yes | - |
| Power Bank | Yes | No |
| Power Input | USB-C | AC Power cable |
| Stereo | Yes | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Party Mode | No | Yes (Wi-Fi Multi-Room) |
| Built-in Microphone | No | Yes |
| Amplifier Power | 200W | 100W |
| Dimensions | 19.9” x 8.5” x 10.6” (506 x 217 x 270 mm) | 13.5” x 7.7” x 7.1” (342 x 195.6 x 180.3 mm) |
| Drivers | 4.5” + 3.5” drivers + 1.2” tweeters | 1” tweeter + 4” woofer + passive radiators |
| Weight | 14.3 lbs (6500 g) | 10.8 lbs (4.9 kg) |
| Digital Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth Version | 5.3 | 5.3 |
| Wi-Fi | - | Yes |
| Voice Assistants | - | Amazon Alexa & Google Assistant (simultaneous) |
| Strap | - | No |
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- JBL Partybox Encore vs W-King D20
Prices on this page were last checked October 12, 2026 at 4:13 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.
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The Two Speakers In Full
W-King D20: $193 AliExpress $193 eBay
Pros: Comes with 2 wireless microphones. Measured bass extension of ~42Hz (-10dB).
Cons: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks
Full W-King D20 review and specifications →
| Released | Feb 2024 (2 years ago) |
|---|---|
| Amplifier Power | 200W |
| App | Yes (W-King app) |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~42Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 19.9” x 8.5” x 10.6” (506 x 217 x 270 mm) |
| Drivers | 4.5” + 3.5” drivers + 1.2” tweeters |
| EQ | Yes (App + button modes) |
| IP Rating | IPX6 |
| Maximum SPL | 112dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 14.3 lbs (6500 g) |
| Wireless Microphones | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: pound for pound battle! WKing X20 D20 vs Stormbox Blast! OMG its a shocker! More from alanrossreviews →
- Alan Ross Reviews: W-King X20 JBL Boombox 3 killer! this should be illegal! - I was shocked!
- Alan Ross Reviews: Soundcore Boom 2 Plus Review - worst boombox speaker under $400?
- Mateusz Cholewa: Soundcore RAVE 3 🤗v🆚s W- KING X20🎶 More from Mateusz Cholewa →
- Jay’s Straight Up Reviews & More: New! W-King X20 vs JBL Boombox 3 🛜 Head to Head 🔋Battery Powered 📊Custom EQ - Links In Description More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: W-King X20 vs Tribit Stormbox Blast 🍿 Garage Battle of Boombox Speakers 🍻Custom & Standard EQ’s
- Jagist reviews: LG xboom Stage 301 Vs W-king X20!!! More from Jagistreviews →
- Jagist reviews: W-king X20 Vs Jbl Encore!!! 😁😁😁
- Jagist reviews: W-king X20 Vs Skullcandy Barrel XT!!! 🤔😋
- Head-to-Head Comparisons
JBL Authentics 300: $499.95 Amazon $499.95 eBay
Same family: the JBL Authentics 200 (smaller model, rated 3.7/5) and the JBL Authentics 500 (larger model, rated 4.1/5).
Pros: Integrates both Amazon Alexa and Google Assistant simultaneously (rare for smart speakers). Retro seventies design with leather and Quadrex grille. 100-watt amp, carries well with leather-trimmed handle. Rechargeable battery rated ~8 hours. Measured bass extension of 45Hz (-10dB).
Cons: Narrow sounding, bass not as deep as others. Peaky upper mids. No TWS. No IP rating. Not as loud as others. Not much battery life.
Full JBL Authentics 300 review and specifications →
| Released | Sep 2023 (3 years ago) |
|---|---|
| Amplifier Power | 100W |
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 45Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 13.5” x 7.7” x 7.1” (342 x 195.6 x 180.3 mm) |
| Drivers | 1” tweeter + 4” woofer + passive radiators |
| EQ | Yes (App EQ) |
| IP Rating | None |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) |
| MicroSD Playback | No |
| Omnidirectional | No |
| Party Mode | Yes (Wi-Fi Multi-Room) |
| Power Bank | No |
| Power Input | AC Power cable |
| Stereo | Partially (1 woofer) |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Voice Assistants | Amazon Alexa & Google Assistant (simultaneous) |
| Weight | 10.8 lbs (4.9 kg) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: JBL Authentics 300 - sound quality test More from Oluv’Sone →
- Oluv Patreon: JBL Authentics 300 - update
- Oluv Patreon: JBL Authentics 300 - listening session
- Alan Ross Reviews: Not quite! JBL Authentics 300 review and sound test vs Boombox 3, Encore and Stormbox Blast More from alanrossreviews →
- Storytripper HD: W-King H330 vs JBL Authentics 300 More from storytripperhd →
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