Short answer: the JBL Partybox Encore, since the Yeahbox’s specs are manufacturer claims. The Sonic Boom Max 3 lists 200W RMS (300W peak) from a true 3-way, 5-driver array, but it is a budget brand with limited independent testing. The Encore ranks #7 of 113 against #59 of 113 at $230 against $228.99 and is a great sounding, somewhat boosted bass party speaker with 10 hours at medium volume.
Buy the JBL Partybox Encore 2, the replacement for the discontinued JBL Partybox Encore; it is rated higher for sound quality than the Yeahbox Sonic Boom Max 3.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| JBL Partybox Encore | Yeahbox Sonic Boom Max 3 | |
|---|---|---|
| Price | $230 Discontinued | $228.99 |
| Ranked | #7 of 113 in Boombox Size Portable Bluetooth Speakers | #59 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (JBL PartyBox app) | Yes |
| Aux Input | Yes | Yes |
| Aux Latency | 17ms | - |
| Bass Extension (-10dB) | 38Hz | - |
| Battery Life | 6 hours (Manufacturer specified) | 111Wh (14.8V/7,500mAh) (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | No | - |
| EQ | Yes (3 band App EQ) | Yes |
| IP Rating | IPX4 | IPX6 |
| Bluetooth Latency | 100ms | - |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (PartyBoost up to 100 speakers) | - |
| Power Bank | Yes (USB-A, 5V/1.5A) | - |
| Power Input | AC Power cord | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 13.9 lbs (6.3 kg) | 16.8 lbs (7.64 kg) |
| Wireless Microphones | Yes 2 Included | - |
| Bluetooth Version | 5.1 | 5.3 |
| Amplifier Power | 100W RMS | 200W RMS / 300W Peak |
| Dimensions | 10.9” x 12.9” x 11.5” (276 x 327 x 293 mm) | 20.7” x 8.3” x 10.6” (525 x 210 x 268 mm) |
| Drivers | 135mm woofer + 2x 20mm tweeters | 189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
| Lights | - | Yes |
| Strap | - | No |
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