Short answer: the Onn Large Party gen 2 on rating and price, the W-King T9 Pro for a swappable battery. The T9 Pro pairs dual 6.5-inch woofers with a swappable battery, TWS pairing and music-synced lighting for long events, but reviewer comparisons describe its tuning as warm and gritty, and it has no water rating. The Onn gen 2 adds wheels, a handle and karaoke mic and guitar inputs at a lower price, with real bass impact in independent testing, though Consumer Reports found boomy bass and smeared treble.
W-King T9 Pro pairs dual 6.5” woofers with a swappable battery, TWS pairing and music-synced lighting, useful for long events, but reviewer comparisons describe its tuning as warm and gritty, and it has no water rating.
Onn Large Party gen 2 adds wheels, a handle and karaoke mic/guitar inputs at a lower price, with real bass impact in independent testing, though Consumer Reports found boomy bass and smeared treble.
Buy the Onn Large Party gen 2 for the better rating and lower price. Buy the W-King T9 Pro if a swappable battery and higher raw output matter more for long events.
There is a real gap in water resistance: the Onn Large Party gen 2 at IPX4 (splashing) against the W-King T9 Pro, which has no water resistance.
Looking for alternatives? See the complete Portable Bluetooth rankings.
A budget party speaker on wheels with real bass impact, karaoke inputs and an FM radio.
A rolling party speaker with dual woofers, a removable battery for long events, stereo pairing, and music synced lights.
Prices on this page were last checked October 24, 2026 at 4:42 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
| Onn Large Party gen 2 | W-King T9 Pro | |
|---|---|---|
| Price | $129 | $171.49 |
| Ranked | #17 of 50 in Party Size Portable Bluetooth Speakers | #35 of 50 in Party Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| FM Tuner | Yes | - |
| Guitar Input | Yes | - |
| IP Rating | IPX4 | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | Yes (Party Sync Mode) | No |
| Power Bank | Yes (USB-A, 5V/2.1A) | No |
| Power Input | AC Power cord | USB-C |
| Stereo | Partially | Yes |
| Omnidirectional | No | No |
| Weight | 20.9 lbs (9.5 kg) | 20 lbs (9.05 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| TWS | No | No |
| USB Playback | No | Yes |
| Drivers | Dual 8” (203mm) woofers + dual tweeters | 2x 6.5” woofers, 2x 2.5” tweeters |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Wheels | Yes | Yes |
| Dimensions | 22.5”H x 11.6”W x 11.8”D (571 x 295 x 300 mm) | 10.8” x 10.1” x 21.1” (274 x 255.7 x 535.5 mm) |
| Amplifier Power | 160W RMS (640W peak) | 250W (peak) |
| Strap | No | - |
| Bluetooth Version | - | 5.3 |
| Charging Time | - | 4 hours |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
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