Short answer: the Onn Large Party gen 2, since our notes saw no reason to buy the discontinued Partybox 300. The Partybox 300 delivers crisp highs and punchy bass with a bass-boost function, but it is hard to carry, too tall, and there is no real reason to buy one over the cheaper Partybox 100. The Onn costs much less and adds karaoke mic and guitar inputs and wheels, though Consumer Reports found its bass boomy and treble smeared with no app or EQ. The JBL Partybox 300 is discontinued; its replacement is the JBL Partybox 330. If you are buying new, get the JBL Partybox 330.

Partybox 300 delivers crisp highs and punchy bass with a bass-boost function, but it’s hard to carry, too tall, and our notes say there’s no real reason to buy one over the cheaper Partybox 100; it’s since been discontinued.
Onn Large Party gen 2 costs much less and adds karaoke mic/guitar inputs and wheels, though Consumer Reports found its bass boomy and treble smeared with no app or EQ.
Buy the JBL Partybox 300 only if you find one and sound quality is the priority despite its awkward shape. Buy the Onn Large Party gen 2 for the lower price, wheels and karaoke inputs.
Battery life favors the JBL Partybox 300: rated for 18 hours against 12 hours for the Onn Large Party gen 2.
There is a real gap in water resistance: the Onn Large Party gen 2 at IPX4 (splashing) against the JBL Partybox 300, which has no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
A budget party speaker on wheels with real bass impact, karaoke inputs and an FM radio.
A now discontinued party speaker with crisp highs, punchy bass, plenty of inputs and lights, worth buying used for backyard parties.
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Specifications Side By Side
| Onn Large Party gen 2 | JBL Partybox 300 | |
|---|---|---|
| Price | $129 | $300 Discontinued |
| Ranked | #17 of 50 in Party Size Portable Bluetooth Speakers | #10 of 50 in Party Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| FM Tuner | Yes | - |
| Guitar Input | Yes | Yes |
| IP Rating | IPX4 | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (Karaoke mode with echo effect) |
| Party Mode | Yes (Party Sync Mode) | No |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-A) |
| Power Input | AC Power cord | AC Power cord |
| Stereo | Partially | Yes (lying down) |
| Omnidirectional | No | No |
| Weight | 20.9 lbs (9.5 kg) | 35.3 lbs (16 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| TWS | No | Yes |
| USB Playback | No | Yes |
| Drivers | Dual 8” (203mm) woofers + dual tweeters | 2x 6.5” (165mm) woofers + 3x 2.25” (57mm) tweeters |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Wheels | Yes | - |
| Dimensions | 22.5”H x 11.6”W x 11.8”D (571 x 295 x 300 mm) | 27” x 13” x 12.7” (685.8 x 330.2 x 322.6 mm) |
| Amplifier Power | 160W RMS (640W peak) | 120W |
| Strap | No | No |
| Bass Extension (-10dB) | - | 40Hz |
| Bluetooth Version | - | 4.2 |
| Frequency Response | - | 45Hz - 20kHz (Manufacturer specified) |
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