Short answer: the Sony ULT Field 7 for better sound quality, the Turtlebox for the lower price. The Sony ULT Field 7 ranks #40 of 73 boombox speakers at $400. The Turtlebox ranks #70 at $329, $71 cheaper.
What the Turtlebox offers: Waterproof and crushproof, loud with punchy bass. 25 hour battery life (6 hours at full volume). Pairs with a second unit for stereo. Watch for: Sounds basically identical to the later Gen 2 and Gen 3: each generation mainly added features, not sound quality. They pretty much lie about all their specs and sound horrible in all youtube sound samples. Only 50w (from their indigogo page), will never hit 120db at a reasonable measuring distance. Putting your db meter right against the speaker doesn’t count, 1 meter distance is the standard. Barely any bass. Rattles at high volume. Uses an external AC power brick to charge, before USB-C was added on the Gen 2. Looking at it, it appears to be a generic car 2-way 6x9 speaker in a plastic box.
What the Sony ULT Field 7 offers: Better sounding than the XG500 Watch for: Still not as deep bass as the top ranked speakers. 8khz peak
Buy the Turtlebox if the price matters more than sound quality. Buy the Sony ULT Field 7 if sound quality matters more than the price.
If sound quality matters at all to you, skip the Turtlebox. It ranks near the bottom of the 73 boombox speakers, so look higher up the list instead.
Specifications Side By Side
| Turtlebox | Sony ULT Field 7 | |
|---|---|---|
| Price | $329 Discontinued | $400 |
| Ranked | #70 of 73 in Boombox Size Portable Bluetooth Speakers | #40 of 73 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~65Hz | ~52Hz |
| Battery Life | 25 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 10 lbs / 4.54 kg | 13.9 lbs / 6.3 kg |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| App | No | No |
| EQ | No | Yes (App + ULT button) |
| TWS | Yes | Yes |
| Party Mode | No | Yes (Party Connect up to 100 speakers) |
| Power Bank | No | Yes (USB-A, 5V/1.5A) |
| USB Playback | No | Yes |
| Built in Microphone | No | Yes |
| Power Input | AC Power brick | AC Power cord |
| Bluetooth Version | 4.0 | 5.2 |
| Output Power | 50W | 100W |
| Dimensions | 12" x 7" x 8.7" (305 x 178 x 222 mm) | 20.2" x 8.8" x 8.7" (512 x 224 x 222 mm) |
| Drivers | 1x 6x9" (152x228mm) woofer + 1x 1" (25mm) tweeter | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9") tweeters |
| Digital Aux Input | No | No |
| Discontinued | Yes | - |
| Guitar Input | - | Yes |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
Related Speaker Comparisons
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- Sony SRS-XG500 vs Turtlebox Gen 2
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- Turtlebox vs Demerbox DB2
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Prices on this page were last checked August 25, 2026 at 6:19 AM 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
Turtlebox: $329 Discontinued Amazon eBay
Pros: Waterproof and crushproof, loud with punchy bass. 25 hour battery life (6 hours at full volume). Pairs with a second unit for stereo.
Cons: Sounds basically identical to the later Gen 2 and Gen 3: each generation mainly added features, not sound quality. They pretty much lie about all their specs and sound horrible in all youtube sound samples. Only 50w (from their indigogo page), will never hit 120db at a reasonable measuring distance. Putting your db meter right against the speaker doesn’t count, 1 meter distance is the standard. Barely any bass. Rattles at high volume. Uses an external AC power brick to charge, before USB-C was added on the Gen 2. Looking at it, it appears to be a generic car 2-way 6x9 speaker in a plastic box. Discontinued.
Full Turtlebox review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~65Hz |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.0 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 12" x 7" x 8.7" (305 x 178 x 222 mm) |
| Discontinued | Yes |
| Drivers | 1x 6x9" (152x228mm) woofer + 1x 1" (25mm) tweeter |
| EQ | No |
| IP Rating | IP67 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 50W |
| Party Mode | No |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 10 lbs / 4.54 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Turtlebox Gen 1 vs JBL Partybox 110 Review
- Outeraudio: Turtlebox vs EcoXgear Defender Sound Comparison
- Risk Profile: TurtleBox Demo Risk Profile Podcast
- Everyday Man: Soundboks Go Vs Turttlebox Vs EcoXGear Defender
- KosherTech: Soundcore Rave VS Turtlebox- (Sound Test Only)🎧
- Reddit Search for Turtlebox Review
- Head-to-Head Comparisons
Sony ULT Field 7: $400 Amazon eBay
Pros: Better sounding than the XG500
Cons: Still not as deep bass as the top ranked speakers. 8khz peak
Full Sony ULT Field 7 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~52Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| 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 |
| Output Power | 100W |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 13.9 lbs / 6.3 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: SONY ULT Field 7 💣vs JBL Boombox 3 🧨 Showdown! 🪇Let’s Shake it Up! 🔋Battery Powered Basement Battle More from JaysStraightUpReviews →
- Dominik Reviews: Sony ULT Field 7 vs Tribit Stormbox Blast Both good? 😂 More from Dominik Reviews →
- Reddit Search for Sony ULT Field 7 Review
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- Sony ULT Field 7 vs Soundcore Rave Party 2
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- Sony ULT Field 7 vs JBL Partybox On the Go
- Sony ULT Field 7 vs Sony SRS-XG500
- Sony ULT Field 7 vs JBL Boombox
- Sony ULT Field 7 vs Soundcore Motion Boom+
- Sony ULT Field 7 vs Teufel Boomster 2021
- See all 25 comparisons