Short answer: the Aiwa Exos-10. It ranks #39 of 91 boombox speakers by sound quality, rated 3.5/5, at $159.99; the Sony ULT Field 7 ranks #56, rated 3.2/5, and costs $400, so there is little reason to consider the other one.
Why pick the Aiwa Exos-10: Clear, clean treble with good separation of instruments and vocals, and no distortion even near full volume in a side by side test against the W-King X20, where it kept up in loudness at 90%. The tradeoff: It lacks deep bass: even with bass maxed it rolls off around 50Hz, where the W-King X20 and Zealot boomboxes reach deeper, and it is about 2dB quieter at full volume.
The Sony ULT Field 7 is the longer-running pick. It is rated for 30 hours of battery against 12 for the Aiwa Exos-10. The tradeoff: A peak around 8kHz, and bass does not reach as deep as the top-ranked speakers.
Buy the Aiwa Exos-10. It is rated higher for sound quality than the Sony ULT Field 7 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Aiwa Exos-10 | Sony ULT Field 7 | |
|---|---|---|
| Price | $159.99 | $400 |
| Ranked | #39 of 91 in Boombox Size Portable Bluetooth Speakers | #56 of 91 in Boombox Size Portable Bluetooth Speakers |
| Drivers | 6.5” (165mm) subwoofer + full-range drivers, 4 passive radiators | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters |
| Amplifier Power | 200W RMS (40W x 2 + 120W) | 100W |
| Battery Life | 12 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Removable Battery | No | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.2 |
| Aux Input | Yes | Yes |
| USB Playback | Yes | Yes |
| FM Tuner | Yes | - |
| Party Mode | Yes (Party Sync, 100+ speakers) | Yes (Party Connect up to 100 speakers) |
| EQ | Yes (bass and treble) | Yes (App + ULT button) |
| Stereo | Partially | Yes |
| Bass Extension (-10dB) | - | ~52Hz |
| Guitar Input | - | Yes |
| IP Rating | - | IP67 |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| Power Bank | - | Yes (USB-A, 5V/1.5A) |
| Power Input | - | AC Power cord |
| Omnidirectional | - | No |
| Weight | - | 13.9 lbs (6.3 kg) |
| Bluetooth Codecs | - | SBC, AAC, LDAC |
| App | - | No |
| TWS | - | Yes |
| Built-in Microphone | - | Yes |
| Dimensions | - | 20.2” x 8.8” x 8.7” (512 x 224 x 222 mm) |
| Digital Aux Input | - | No |
| Strap | - | No |
Related Speaker Comparisons
More top alternatives to Aiwa Exos-10:
- Tribit Stormbox Blast vs Aiwa Exos-10
- JBL Partybox Encore 2 vs Aiwa Exos-10
- JBL PartyBox On-The-Go 2 Plus vs Aiwa Exos-10
- JBL Partybox Encore Essential 2 vs Aiwa Exos-10
- JBL Partybox Encore Essential vs Aiwa Exos-10
Prices on this page were last checked October 4, 2026 at 9:58 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
Aiwa Exos-10: $159.99 Amazon eBay
Older model: the Aiwa Exos-9 (ranked higher, rated 4.2/5).
Pros: Clear, clean treble with good separation of instruments and vocals, and no distortion even near full volume in a side by side test against the W-King X20, where it kept up in loudness at 90%. A 200W RMS tri-amplified design with a 6.5” woofer and four passive radiators, FM radio with presets, aux and USB inputs, a remote, analog-style VU meters and Party Sync with 100+ speakers.
Cons: It lacks deep bass: even with bass maxed it rolls off around 50Hz, where the W-King X20 and Zealot boomboxes reach deeper, and it is about 2dB quieter at full volume. Owners comparing it with the Aiwa Exos 9 it replaces find the older model clearer with tighter bass, and the Exos 10 drops the Exos 9’s 5-band EQ (only bass and treble) and removable battery. Claimed battery life is 12 hours.
Full Aiwa Exos-10 review and specifications →
| Amplifier Power | 200W RMS (40W x 2 + 120W) |
|---|---|
| Aux Input | Yes |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Version | 5.0 |
| Drivers | 6.5” (165mm) subwoofer + full-range drivers, 4 passive radiators |
| EQ | Yes (bass and treble) |
| FM Tuner | Yes |
| Party Mode | Yes (Party Sync, 100+ speakers) |
| Removable Battery | No |
| Stereo | Partially |
| USB Playback | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Aiwa Exos-10 vs W-King X20
- Aiwa Exos-10 vs JBL Authentics 300
- Aiwa Exos-10 vs Soundcore Boom 2 Plus
- Aiwa Exos-10 vs Tribit Stormbox Blast 2
- Aiwa Exos-10 vs JBL Boombox 3
- Aiwa Exos-10 vs JBL Boombox 3 Wifi
- Aiwa Exos-10 vs JBL Boombox 4
- Aiwa Exos-10 vs Onn Medium Party Speaker Gen 2
- See all 26 comparisons
Sony ULT Field 7: $400 Amazon eBay
Older model: the Sony SRS-XG500 (ranked lower, rated 3/5).
Smaller model: the Sony ULT Field 1 (rated 3.1/5).
Larger model: the Sony ULT Tower 10 (rated 3.9/5).
Pros: Sony ULT Field 7 uses 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters. Its 6.3 kg, claimed 30 hours (Manufacturer specified) battery life, IP67 protection, aux input and stereo playback make it a practical option for its intended room or portable use. Measured bass extension of ~52Hz (-10dB).
Cons: Bass is limited by its ~52Hz specification. There is no companion app. A peak around 8kHz, and bass does not reach as deep as the top-ranked speakers.
Full Sony ULT Field 7 review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~52Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 20.2” x 8.8” x 8.7” (512 x 224 x 222 mm) |
| Drivers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9”) tweeters |
| EQ | Yes (App + ULT button) |
| Guitar Input | Yes |
| IP Rating | IP67 |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 13.9 lbs (6.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 7 vs Skullcandy Barrel
- Sony ULT Field 7 vs Soundcore Rave Party 2
- Sony ULT Field 7 vs Yeahbox Sonic Boom Max 3
- Sony ULT Field 7 vs Teufel Boomster NG (2017)
- Sony ULT Field 7 vs Onn Medium Party Speaker Gen 2
- Sony ULT Field 7 vs JBL Partybox On the Go
- Sony ULT Field 7 vs Sony SRS-XG500
- Sony ULT Field 7 vs Gemini GRV-650L
- See all 85 comparisons