Short answer: the JBL Partybox Encore 2. It ranks #4 of 112 boombox speakers by sound quality, rated 4.4/5, at $330. The Yeahbox Sonic Boom Max 3 ranks #59, rated 3.2/5, at $228.99, $101.01 cheaper, a saving that is not big enough to make up the sound-quality gap.
The JBL Partybox Encore 2 is the better-sounding option. A compact karaoke party speaker with two wireless mics, better balanced sound than the original and a long battery. The catch: It still lacks some upper-bass punch and cannot match the scale of the larger PartyBoxes.
The Yeahbox Sonic Boom Max 3 is the tougher pick. A large party speaker with powerful bass, a big fast charging battery and app EQ for outdoor parties. It is rated IPX6 against IPX4 for the JBL Partybox Encore 2. Watch for: There is limited independent testing and the water/dust rating is reported inconsistently across listings.
Buy the JBL Partybox Encore 2. It is rated higher for sound quality, and saving $101.01 with the Yeahbox Sonic Boom Max 3 does not make up for the sound-quality gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A compact karaoke party speaker with two wireless mics, better balanced sound than the original and a long battery.
A large party speaker with powerful bass, a big fast charging battery and app EQ for outdoor parties.
Prices on this page were last checked October 31, 2026 at 7:11 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 Partybox Encore 2 | Yeahbox Sonic Boom Max 3 | |
|---|---|---|
| Price | $330 | $228.99 |
| Ranked | #4 of 112 in Boombox Size Portable Bluetooth Speakers | #59 of 112 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (JBL PartyBox app) | Yes |
| Aux Input | Yes | Yes |
| Battery Life | 15 hours (Manufacturer specified) | 111Wh (14.8V/7,500mAh) (Manufacturer specified) |
| Built-in Microphone | No | - |
| EQ | Yes (7 band App EQ) | Yes |
| IP Rating | IPX4 | IPX6 |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Auracast) | - |
| Power Bank | Yes (USB-C) | - |
| Power Input | AC Power cord | USB-C |
| Removable Battery | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 14.1 lbs (6.4 kg) | 16.8 lbs (7.64 kg) |
| Wireless Microphones | Yes 2 Included | - |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.4 | 5.3 |
| Amplifier Power | 100W RMS | 200W RMS / 300W Peak |
| Dimensions | 12.6” x 13.3” x 10.4” (319.5 x 338.6 x 263 mm) | 20.7” x 8.3” x 10.6” (525 x 210 x 268 mm) |
| Drivers | 1x 135mm (5.25”) woofer + 2x 20mm (0.75”) dome tweeters | 189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Strap | No | No |
| Bass Extension (-10dB) | 42Hz | - |
| MicroSD Playback | - | Yes |
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