Short answer: the Zealot S89. It ranks #19 of 98 boombox speakers by sound quality (rated 4.0/5) at $246.99 and is still sold new; the Sony SRS-XG500 ranks #65 (rated 3.0/5) and is discontinued, so it is only an option used. The Sony SRS-XG500’s replacement, the Sony ULT Field 7, is rated 3.2/5 at $448.99.
The Zealot S89 is the better-sounding, deeper-bass option. A 16.1 lbs (7.3 kg) boombox with a claimed 36Hz bass extension, 40-hour battery life, IPX6 protection, USB-C charging, aux, USB and microSD playback, TWS and multi-speaker PartyAdd. Its bass reaches about 36Hz before falling 10dB, against 49Hz for the Sony SRS-XG500. It is rated for 40 hours of battery against 30 for the Sony SRS-XG500. The catch: At high volume, listener reports describe the bass as loose or muddy and the overall balance as less clear than better boombox speakers.
The Sony SRS-XG500 is the lighter pick. 30 hour battery life; 10-min quick-charge gives 3 hours. At 12.3 lbs (5.6 kg) it weighs noticeably less than the Zealot S89 at 16.1 lbs (7.3 kg). It supports LDAC Bluetooth, which the Zealot S89 lacks. Watch for: Thuddy upper bass, not as deep bass as others.
Buy the Zealot S89. It is rated higher for sound quality, and the Sony SRS-XG500 is discontinued, so it is only available used.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Zealot S89 | Sony SRS-XG500 | |
|---|---|---|
| Price | $246.99 | $399.99 Discontinued |
| Ranked | #19 of 98 in Boombox Size Portable Bluetooth Speakers | #65 of 98 in Boombox Size Portable Bluetooth Speakers |
| App | No | Yes (Music Center, Fiestable) |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 36Hz | 49Hz |
| Battery Life | 40 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| EQ | Yes (multiple modes) | Yes (App + ClearAudio+) |
| IP Rating | IPX6 | IP66 |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| MicroSD Playback | Yes | - |
| Party Mode | Yes (PartyAdd up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 16.1 lbs (7.3 kg) | 12.3 lbs (5.6 kg) |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-A, 5V/1.5A) |
| USB Playback | Yes | Yes |
| Built-in Microphone | No | Yes |
| Amplifier Power | 250W | 2x 25W + 2x 10W |
| Dimensions | 21.2” x 10.4” x 9.4” (538 x 265 x 240 mm) | 18.1” x 10.1” x 8.5” (460 x 256 x 215 mm) |
| Drivers | 130W subwoofer + 2x 40mm drivers + 2x tweeters | 2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.3 | 5.0 |
| Strap | No | No |
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Prices on this page were last checked October 12, 2026 at 4:13 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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The Two Speakers In Full
Zealot S89: $246.99 Amazon $246.99 AliExpress $193.58 eBay
Pros: A 7.3kg boombox with a claimed 36Hz bass extension, 40-hour battery life, IPX6 protection, USB-C charging, aux, USB and microSD playback, TWS and multi-speaker PartyAdd. Listener comparisons find it capable of very high output and substantial bass for outdoor use. A great value for its bass, battery life and maximum volume. Measured bass extension of 36Hz (-10dB).
Cons: At high volume, listener reports describe the bass as loose or muddy and the overall balance as less clear than better boombox speakers. The heavy cabinet and basic finish also make it less polished for daily portability, while its multiple EQ modes cannot substitute for a genuinely neutral tuning.
Full Zealot S89 review and specifications →
| Released | Mar 2025 (1 year ago) |
|---|---|
| Amplifier Power | 250W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 36Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 21.2” x 10.4” x 9.4” (538 x 265 x 240 mm) |
| Drivers | 130W subwoofer + 2x 40mm drivers + 2x tweeters |
| EQ | Yes (multiple modes) |
| IP Rating | IPX6 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 16.1 lbs (7.3 kg) |
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Sony SRS-XG500: $399.99 Discontinued Amazon $399.99 eBay
Newer model: the Sony ULT Field 7, ranked higher, rated 3.2/5, released Apr 2024. It drops app control. Water resistance goes from IP66 to IP67. See every Sony XB and ULT generation.
Pros: 30 hour battery life; 10-min quick-charge gives 3 hours. Battery care function stops charging at 90% to extend longevity. IP66 water/dust resistant. Two USB-A ports (one charges devices), mic/guitar inputs, AUX. Party mode links 100+ speakers. Measured bass extension of 49Hz (-10dB).
Cons: Thuddy upper bass, not as deep bass as others. Speaker will not remain at max volume and will turn itself down automatically. Discontinued.
Full Sony SRS-XG500 review and specifications →
| Released | Apr 2021 (5 years ago) |
|---|---|
| Amplifier Power | 2x 25W + 2x 10W |
| App | Yes (Music Center, Fiestable) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 49Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 18.1” x 10.1” x 8.5” (460 x 256 x 215 mm) |
| Drivers | 2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer |
| EQ | Yes (App + ClearAudio+) |
| IP Rating | IP66 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 12.3 lbs (5.6 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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