These sit in different size classes, so this is not a straight ranking comparison. The Bose S1 Pro+ ranks #6 of 16 battery-powered PA speakers by sound quality at $699; the Sony GTK-XB90 ranks #45 of 49 party speakers by sound quality at $429.
What the Bose S1 Pro+ does well: Extremely compact and light with flexible placement options, and very loud for its size. It has an adjustable EQ, which the Sony GTK-XB90 lacks. The catch: Leans toward a bright sound signature, and its bass bottoms out as the volume rises, so full range music suffers well before maximum loudness.
The Sony GTK-XB90 is the longer-running pick. Deep punchy EXTRA BASS technology for party use. It is rated for 16 hours of battery against 11 for the Bose S1 Pro+. It supports LDAC Bluetooth, which the Bose S1 Pro+ lacks. It plays in stereo from a single unit, unlike the Bose S1 Pro+. The tradeoff: Bass is muddy and not deep, weird midrange peak, rolled off treble and overall strange tuning.
Worth knowing: the Sony GTK-XB90 has been discontinued and is hard to find new at this point.
Buy the Bose S1 Pro+ at $699 if you want a battery-powered PA speaker. Buy the Sony GTK-XB90 at $429 if you want a party speaker instead.
Want more options? Browse the full PA & Live Sound rankings and Portable Bluetooth rankings.
Extremely compact and light with flexible placement options, and very loud for its size.
Amazon $699.00 eBay
Prices 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Bose S1 Pro+ | Sony GTK-XB90 | |
|---|---|---|
| Price | $699.00 | $429 Discontinued |
| Ranked | #6 of 16 in Battery-Powered PA Speakers | #45 of 49 in Party Size Portable Bluetooth Speakers |
| Passive | No | - |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 55Hz | ~50Hz |
| Battery Life | 11 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, SBC | SBC, AAC, LDAC |
| Bluetooth Version | 5.0 | - |
| Charging Time | 5 hours | - |
| Dimensions | 13.1” x 9.4” x 11” (332.7 x 238.8 x 279.4 mm) | 13.2” x 26.4” x 13.2” (336 x 670 x 335 mm) |
| EQ | Yes | No |
| IP Rating | None | None |
| Inputs | 2x XLR/6.3mm combo (mic/line/instrument), 6.3mm line, 3.5mm stereo, Bluetooth | - |
| Microphone Input | Yes | - |
| Party Mode | Yes (Bose Party mode) | Yes (Partychain up to 100 speakers) |
| Power Bank | No | Yes (USB-A, 2.1A) |
| Power Input | AC Power cord | AC Power cord |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | No | No |
| Weight | 14.3 lbs (6.5 kg) | 30.9 lbs (14 kg) |
| XLR Input | Yes | - |
| Drivers | 1x 6” (152mm) woofer + 3x 2.25” (57mm) tweeters | 12cm drivers + passive radiators |
| Maximum SPL | 109dB | - |
| Amplifier Power | 150W | - |
| Digital Aux Input | No | No |
| 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 | - |
| Bluetooth | Yes | Yes |
| Guitar Input | Yes | - |
| Bass Extension (-3dB) | 62Hz | - |
| Coverage | 120° H x 50° V | - |
| Lights | - | Yes |
Related Speaker Comparisons
How Bose S1 Pro+ compares with other leading options: