Short answer: choose the JBL Partybox Stage 320 for music-first parties, deep-bass headroom, and rolling portability; choose the Bose S1 Pro+ for speeches, acoustic performance, and small events that need proper mixer controls in a much lighter cabinet. These speakers overlap on battery power, Bluetooth, app EQ, mic and guitar connectivity, but their intended jobs are very different.
The Stage 320 is the better party speaker. Its 240W amplifier, two 6.5-inch woofers, partially stereo layout, 18-hour battery claim, removable battery, handle and wheels suit a larger music system. It adds USB playback, a five-band EQ, Auracast pairing, USB power-bank output, lights, and karaoke-ready mic and guitar inputs. It is 36.4 lbs (16.5 kg) and very large, though, so its easier transport comes from the wheels rather than hand-carrying.
The Bose is a compact PA with a mixer, not a substitute for the JBL’s party output. At 14.3 lbs (6.5 kg), it is less than half the JBL’s weight and can sit upright, tilted, or mounted. Its three-channel mixer gives two XLR or quarter-inch combo inputs, individual tone and reverb control, Auto EQ, and optional docked wireless transmitters. That is more useful for a presenter or solo musician, while its single-channel sound, 11-hour battery claim, lack of water resistance, and distortion at high full-range volume limit its appeal for a loud music party.
Buy the JBL Partybox Stage 320 for music playback, party features, removable-battery convenience, and more scale for a crowd.
Buy the Bose S1 Pro+ for a light, configurable speaker that can replace a small mixer for microphones, instruments, and speech.
Buy the JBL Partybox Stage 320 at $499.95 if you want a party speaker. Buy the Bose S1 Pro+ at $699 if you want a battery-powered PA speaker instead.
There is a real gap in water resistance: the JBL Partybox Stage 320 at IPX4 (splashing) against the Bose S1 Pro+, which has no water resistance.
Looking for alternatives? See the complete Portable Bluetooth rankings and PA & Live Sound rankings.
Among the best-sounding party speakers in its size class, and it keeps more bass than the JBL Partybox 310 at high volume.
Amazon $499.95 eBay
Extremely compact and light with flexible placement options, and very loud for its size.
Amazon $699.00 eBayPrices on this page were last checked October 17, 2026 at 6:04 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 Stage 320 | Bose S1 Pro+ | |
|---|---|---|
| Price | $499.95 | $699.00 |
| Ranked | #3 of 49 in Party Size Portable Bluetooth Speakers | #6 of 16 in Battery-Powered PA Speakers |
| App | Yes | Yes |
| Aux Input | Yes | Yes |
| Battery Life | 18 hours (Manufacturer specified) | 11 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | AAC, SBC |
| Bluetooth Version | 5.4 | 5.0 |
| Drivers | 2x 6.5” woofers, 2x 25mm tweeters | 1x 6” (152mm) woofer + 3x 2.25” (57mm) tweeters |
| EQ | Yes (5 band) | Yes |
| Guitar Input | Yes | Yes |
| IP Rating | IPX4 | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes |
| Party Mode | Yes (Auracast) | Yes (Bose Party mode) |
| Power Bank | Yes (USB-A, 5V/2.1A) | No |
| Power Input | AC Power cord | AC Power cord |
| Removable Battery | Yes | - |
| Stereo | Partially | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | No |
| Weight | 36.4 lbs (16.5 kg) | 14.3 lbs (6.5 kg) |
| Amplifier Power | 240W | 150W |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Wheels | Yes | - |
| Dimensions | 26.3”H x 13.2”W x 15.2”D (669 x 335 x 385 mm) | 13.1” x 9.4” x 11” (332.7 x 238.8 x 279.4 mm) |
| Strap | No | - |
| Passive | - | No |
| Bass Extension (-10dB) | - | 55Hz |
| Charging Time | - | 5 hours |
| Inputs | - | 2x XLR/6.3mm combo (mic/line/instrument), 6.3mm line, 3.5mm stereo, Bluetooth |
| XLR Input | - | Yes |
| Maximum SPL | - | 109dB |
| Configuration | - | Battery-powered 2-way active PA |
| Cabinet Material | - | Polypropylene |
| Rigging | - | 35mm pole mount; multi-position cabinet |
| DSP | - | 3-channel mixer with EQ, reverb and Auto EQ |
| Bass Extension (-3dB) | - | 62Hz |
| Coverage | - | 120° H x 50° V |
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