Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The JBL Authentics 300 ranks #33 of 76 boombox speakers by sound quality at $299.95; the W-King T9 Pro ranks #27 of 40 party speakers by sound quality at $171.49.
What the JBL Authentics 300 does well: Integrates both Amazon Alexa and Google Assistant simultaneously (rare for smart speakers). The tradeoff: Narrow sounding, bass not as deep as others.
Why pick the W-King T9 Pro: A feature-rich rolling party speaker with dual 6.5-inch woofers, removable battery, TWS pairing, bass presets and music-synced lighting. The catch: Reviewer comparisons describe the tuning as warm and gritty rather than clean or detailed.
Buy the JBL Authentics 300 at $299.95 for a boombox speaker, or the W-King T9 Pro at $171.49 for a party speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| JBL Authentics 300 | W-King T9 Pro | |
|---|---|---|
| Price | $299.95 | $171.49 |
| Ranked | #33 of 76 in Boombox Size Portable Bluetooth Speakers | #27 of 40 in Party Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | 45Hz | - |
| Battery Life | 8 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| EQ | Yes (App EQ) | No |
| IP Rating | None | None |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Wi-Fi Multi-Room) | No |
| Power Input | AC Power cable | USB-C |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Weight | 10.8 lbs (4.9 kg) | 20 lbs (9.05 kg) |
| Wi-Fi | Yes | - |
| Bluetooth Codecs | SBC | SBC |
| Power Bank | No | No |
| USB Playback | Yes | Yes |
| Built-in Microphone | Yes | - |
| MicroSD Playback | No | - |
| Aux Input | No | Yes |
| Amplifier Power | 100W | 250W (peak) |
| Dimensions | 13.5” x 7.7” x 7.1” (342 x 195.6 x 180.3 mm) | 10.8” x 10.1” x 21.1” (274 x 255.7 x 535.5 mm) |
| Drivers | 1” tweeter + 4” woofer + passive radiators | 2x 6.5” woofers, 2x 2.5” tweeters |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.3 | 5.3 |
| Voice Assistants | Amazon Alexa & Google Assistant (simultaneous) | - |
| Strap | No | - |
| Charging Time | - | 4 hours |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Lights | - | Yes |
| Wheels | - | Yes |
Related Speaker Comparisons
More worthwhile head-to-heads for JBL Authentics 300:
- Tribit Stormbox Blast vs JBL Authentics 300
- Harman Kardon Go + Play 3 vs JBL Authentics 300
- JBL Partybox Encore 2 vs JBL Authentics 300
- JBL Partybox Encore Essential 2 vs JBL Authentics 300
- JBL Partybox Encore vs JBL Authentics 300
Prices on this page were last checked September 26, 2026 at 11:14 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
JBL Authentics 300: $299.95 Amazon eBay
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 →
| Amplifier Power | 100W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 45Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| 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 →
- Head-to-Head Comparisons
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- See all 93 comparisons
W-King T9 Pro: $171.49 AliExpress eBay
Pros: A feature-rich rolling party speaker with dual 6.5-inch woofers, removable battery, TWS pairing, bass presets and music-synced lighting. The swappable battery is especially useful for long events, and its strong output gives it much more headroom than compact Bluetooth speakers.
Cons: Reviewer comparisons describe the tuning as warm and gritty rather than clean or detailed. Its claimed output figures should not be mistaken for neutral sound quality, and a large cabinet with no stated water rating is a poor fit for wet outdoor use.
Full W-King T9 Pro review and specifications →
| Amplifier Power | 250W (peak) |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Charging Time | 4 hours |
| Digital Aux Input | No |
| Dimensions | 10.8” x 10.1” x 21.1” (274 x 255.7 x 535.5 mm) |
| Drivers | 2x 6.5” woofers, 2x 2.5” tweeters |
| EQ | No |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | None |
| Lights | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| USB Playback | Yes |
| Weight | 20 lbs (9.05 kg) |
| Wheels | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons