Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The JBL Authentics 300 ranks #46 of 113 boombox speakers by sound quality at $299.95; the W-King T9 Pro ranks #38 of 53 party speakers by sound quality at $171.49.
The JBL Authentics 300 is the lighter option. A retro styled smart speaker with both Alexa and Google Assistant, a leather handle and battery power. At 10.8 lbs (4.9 kg) it weighs much less than the W-King T9 Pro at 20 lbs (9.05 kg). It links with other speakers (Wi-Fi Multi-Room), which the W-King T9 Pro cannot. It has an adjustable EQ, which the W-King T9 Pro lacks. The catch: Narrow sounding, bass not as deep as others.
The W-King T9 Pro is the longer-running pick. A rolling party speaker with dual woofers, a removable battery for long events, stereo pairing, and music synced lights. It is rated for 12 hours of battery against 8 for the JBL Authentics 300. It keeps a wired aux input, which the JBL Authentics 300 lacks. The tradeoff: 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.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| JBL Authentics 300 | W-King T9 Pro | |
|---|---|---|
| Price | $299.95 | $171.49 |
| Ranked | #46 of 113 in Boombox Size Portable Bluetooth Speakers | #38 of 53 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 | Yes | 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 |
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