Short answer: the JBL Partybox Encore Essential 2. It ranks #6 of 113 boombox speakers by sound quality, rated 4.3/5, at $249.95. The Gemini GRV-650L ranks #56, rated 3.3/5, at $149.95, $100 cheaper, which does not close the gap in sound quality.
The JBL Partybox Encore Essential 2 is the better-sounding, deeper-bass choice. A compact party speaker with balanced sound, punchy bass, mic and guitar inputs, and enough volume for a backyard party. Its bass reaches about 42Hz before falling 10dB, against 47Hz for the Gemini GRV-650L. It is rated for 15 hours of battery against 9 for the Gemini GRV-650L. It links with other speakers (Auracast), which the Gemini GRV-650L cannot. The catch: It is front-facing, so the sound changes noticeably to the sides and behind it, and bass compression reduces kick-drum impact at maximum volume.
Why pick the Gemini GRV-650L: A great value party speaker with an included wireless mic, remote, FM radio and water resistance. Watch for: Not quite as deep bass as the top ranked speakers.
Buy the JBL Partybox Encore Essential 2. It is rated higher for sound quality, and saving $100 with the Gemini GRV-650L does not make up for the sound-quality gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 7, 2026 at 7:34 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 Essential 2 | Gemini GRV-650L | |
|---|---|---|
| Price | $249.95 | $149.95 |
| Ranked | #6 of 113 in Boombox Size Portable Bluetooth Speakers | #56 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (JBL PartyBox app) | No |
| Aux Input | Yes | Yes |
| Battery Life | 15 hours (Manufacturer specified) | 9 hours (Manufacturer specified) |
| Built-in Microphone | No | No |
| EQ | Yes (7 band App EQ) | No |
| Guitar Input | Yes | - |
| IP Rating | IPX4 | IPX5 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | Yes (Auracast) | No |
| Power Bank | Yes (USB-C) | Yes |
| Power Input | AC Power cord | USB-C |
| Stereo | Yes | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 13.7 lbs (6.2 kg) | 15.7 lbs (7.1 kg) |
| Wireless Microphones | No | - |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 5.4 | 5.3 |
| Amplifier Power | 100W RMS | 320W |
| Dimensions | 12.6” x 13.5” x 10.3” (319.5 x 342 x 260.4 mm) | 10.9” x 10.2” x 14.4” (277 x 260 x 366 mm) |
| Drivers | 1x 135mm (5.25”) woofer + 2x 20mm (0.75”) dome tweeters | 6.5” woofer + tweeter |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | 104dB (Manufacturer specified) |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | No | No |
| Bass Extension (-10dB) | 42Hz | ~47Hz |
| MicroSD Playback | - | Yes |
| FM Tuner | - | Yes |
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