Short answer: the JBL Partybox 300 for better sound quality, the W-King T9 Pro for the lower price. The JBL Partybox 300 ranks #8 of 50 party speakers at $300. The W-King T9 Pro ranks #35 at $171.49, $128.51 cheaper.
What the JBL Partybox 300 offers: Exceptional sound quality with crisp, crystal clear highs and midranges, hard punchy bass without muddiness. 2x 6.5” woofers + 3x 2.25” tweeters, bass boost function, 45Hz-20kHz frequency range. 18-hour battery with 10400mAh capacity. Multiple inputs (RCA, USB, 3.5mm aux, mic, guitar). LED light modes (meter/pulse/party). True Wireless Stereo pairing up to 2 units. Watch for: Hard to carry, too tall, drags on the ground. Max spl and bass extension are only as good as the Partybox 100. No real reason to ever get one, get a Partybox 100 instead.
What the W-King T9 Pro offers: 250W peak power, 120dB sound output with dual 6.5” woofers + dual 2.5” tweeters. Removable rechargeable battery allows continuous play via battery swapping. 12 custom bass settings for EQ adjustments by music genre. Music-synchronized LED lights (ambient to high-energy strobes). True Wireless Stereo for stereo pairing. Bluetooth 5.3, great customer service. Watch for: Sounds warm, somewhat gritty, not as detailed as higher ranked speakers
Buy the JBL Partybox 300 if sound quality matters more than the price. Buy the W-King T9 Pro if the price matters more than sound quality.
There is a real battery-life gap here: the JBL Partybox 300 is rated for 18 hours, the W-King T9 Pro only 12 hours.
Specifications Side By Side
| JBL Partybox 300 | W-King T9 Pro | |
|---|---|---|
| Price | $300 Discontinued | $171.49 |
| Ranked | #8 of 50 in Party Size Portable Bluetooth Speakers | #35 of 50 in Party Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 40Hz | - |
| Battery Life | 18 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 4.2 | 5.3 |
| Dimensions | 27" x 13" x 12.7" (685.8 x 330.2 x 322.6 mm) | 10.8" x 10.1" x 21.1" (274 x 255.7 x 535.5 mm) |
| EQ | No | No |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) | 50Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes | - |
| IP Rating | None | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | No | No |
| Power Bank | Yes (USB-A) | No |
| Power Input | AC Power cord | - |
| Stereo | Yes (lying down) | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | Yes | Yes |
| Weight | 35.3 lbs / 16 kg | 20 lbs / 9.05 kg |
| Output Power | 120W | 250W (peak) |
| Drivers | 2x 6.5" (165mm) woofers + 3x 2.25" (57mm) tweeters | 2x 6.5" woofers, 2x 2.5" tweeters |
| Discontinued | Yes | - |
| Digital Aux Input | No | No |
| Charging Time | - | 4 hours |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- JBL Partybox 110 vs Sony ULT Field 1
- JBL Partybox 110 vs Tribit Maxsound Plus V1/V2/Thunderbox Plus
- JBL Partybox 110 vs Klipsch Gig XXL
- Soundcore Rave 3/3s vs W-King T9 Pro
- W-King T9 Pro vs Sony GTK-XB60
Prices on this page were last checked August 27, 2026 at 10:09 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
JBL Partybox 300: $300 Discontinued eBay
Pros: Exceptional sound quality with crisp, crystal clear highs and midranges, hard punchy bass without muddiness. 2x 6.5” woofers + 3x 2.25” tweeters, bass boost function, 45Hz-20kHz frequency range. 18-hour battery with 10400mAh capacity. Multiple inputs (RCA, USB, 3.5mm aux, mic, guitar). LED light modes (meter/pulse/party). True Wireless Stereo pairing up to 2 units.
Cons: Hard to carry, too tall, drags on the ground. Max spl and bass extension are only as good as the Partybox 100. No real reason to ever get one, get a Partybox 100 instead. Discontinued.
Full JBL Partybox 300 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 40Hz |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Digital Aux Input | No |
| Dimensions | 27" x 13" x 12.7" (685.8 x 330.2 x 322.6 mm) |
| Discontinued | Yes |
| Drivers | 2x 6.5" (165mm) woofers + 3x 2.25" (57mm) tweeters |
| EQ | No |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | None |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Output Power | 120W |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | AC Power cord |
| Stereo | Yes (lying down) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 35.3 lbs / 16 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- JBL Partybox 300 vs JBL Partybox 110
- JBL Partybox 300 vs Electro-Voice Everse 12
- JBL Partybox 300 vs JBL Partybox 100
- JBL Partybox 300 vs Electrotec Stage One
- JBL Partybox 300 vs JBL Partybox 130
- JBL Partybox 300 vs Teufel Rockster Neo
- JBL Partybox 300 vs Electro-Voice Everse 8
- JBL Partybox 300 vs JBL Partybox Club 120
- See all 31 comparisons
W-King T9 Pro: $171.49 Aliexpress eBay
Pros: 250W peak power, 120dB sound output with dual 6.5” woofers + dual 2.5” tweeters. Removable rechargeable battery allows continuous play via battery swapping. 12 custom bass settings for EQ adjustments by music genre. Music-synchronized LED lights (ambient to high-energy strobes). True Wireless Stereo for stereo pairing. Bluetooth 5.3, great customer service.
Cons: Sounds warm, somewhat gritty, not as detailed as higher ranked speakers
Full W-King T9 Pro review and specifications →
| 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 |
| Omnidirectional | No |
| Output Power | 250W (peak) |
| Party Mode | No |
| Power Bank | No |
| Stereo | Yes |
| TWS | No |
| USB Playback | Yes |
| Weight | 20 lbs / 9.05 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons