Short answer: the onn Pro X Large Boom Boombox. It ranks #43 of 89 boombox speakers by sound quality, rated 3.4/5, at $199; the Turtlebox Gen 3 ranks #83, rated 2.1/5, and costs $430, so there is not much of a tradeoff to weigh.
Why pick the onn Pro X Large Boom Boombox: High rated power for the price at 180W RMS (540W peak). Watch for: Bass not as deep as higher ranked speakers like the JBL Boombox 3, JBL Boombox 4, or Tribit Stormbox Blast.
What the Turtlebox Gen 3 does well: Waterproof (IP67, and it floats) and crushproof, with stainless steel hardware and quality amplifier parts inside. The tradeoff: Sounds basically identical to the original and the Gen 2: each generation mainly added features, not sound quality.
Buy the onn Pro X Large Boom Boombox. It is rated higher for sound quality than the Turtlebox Gen 3 and costs less, so only choose the other one for a particular feature it does better.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| onn Pro X Large Boom Boombox | Turtlebox Gen 3 | |
|---|---|---|
| Price | $199.00 | $430.00 |
| Ranked | #43 of 89 in Boombox Size Portable Bluetooth Speakers | #83 of 89 in Boombox Size Portable Bluetooth Speakers |
| Battery Life | 20 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| IP Rating | IP67 | IP67 |
| Amplifier Power | 180W RMS (540W peak) | 50W |
| Weight | 17.2 lbs (7.8 kg) | 10 lbs (4.54 kg) |
| Dimensions | 20.1” x 10.3” x 9” (510 x 261 x 228 mm) | 12” x 7” x 8.7” (305 x 178 x 222 mm) |
| Drivers | 5 speakers | 1x 6x9” (152x228mm) woofer + 1x 1” (25mm) tweeter |
| Power Input | AC Power cord | DC Barrel Connector (15V/3A) |
| Removable Battery | No | - |
| Party Mode | Yes (Auracast) | Yes (Turtlebox Party Mode) |
| Aux Input | Yes | Yes |
| Power Bank | Yes (USB-A, 5V/2A) | Yes (USB-C) |
| TWS | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 (Manufacturer specified) | 5.4 |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Omnidirectional | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Lights | Yes | - |
| Digital Aux Input | No | No |
| EQ | Yes (Bass Boost) | No |
| Bass Extension (-10dB) | - | ~65Hz |
| MicroSD Playback | - | Yes |
| Stereo | - | Yes |
| App | - | No |
| USB Playback | - | No |
| Built-in Microphone | - | No |
| Strap | - | No |
| Microphone Input | - | Yes (3.5mm) |
| Battery Capacity | - | 85Wh |
| Maximum SPL | - | 102dB (measured by Williston Audio Labs) |
Related Speaker Comparisons
How onn Pro X Large Boom Boombox compares with other leading options:
- Tribit Stormbox Blast vs onn Pro X Large Boom Boombox
- JBL Partybox Encore 2 vs onn Pro X Large Boom Boombox
- JBL Partybox Encore Essential 2 vs onn Pro X Large Boom Boombox
- JBL Partybox Encore Essential vs onn Pro X Large Boom Boombox
- Harman Kardon Onyx Studio 8 vs onn Pro X Large Boom Boombox
Prices on this page were last checked September 30, 2026 at 2:57 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
onn Pro X Large Boom Boombox: $199.00 Walmart eBay
Pros: High rated power for the price at 180W RMS (540W peak). IP67 waterproof design for indoor and outdoor use. 20 hour battery life. 6 LED lighting modes. Party Mode supports multiple devices.
Cons: Bass not as deep as higher ranked speakers like the JBL Boombox 3, JBL Boombox 4, or Tribit Stormbox Blast. Frequency response isn’t as smooth as the top ranked speakers. Charges via AC cable rather than USB-C. Only available in the United States and Canada.
Full onn Pro X Large Boom Boombox review and specifications →
| Amplifier Power | 180W RMS (540W peak) |
|---|---|
| Aux Input | Yes |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.4 (Manufacturer specified) |
| Digital Aux Input | No |
| Dimensions | 20.1” x 10.3” x 9” (510 x 261 x 228 mm) |
| Drivers | 5 speakers |
| EQ | Yes (Bass Boost) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Lights | Yes |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-A, 5V/2A) |
| Power Input | AC Power cord |
| Removable Battery | No |
| TWS | Yes |
| Weight | 17.2 lbs (7.8 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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Turtlebox Gen 3: $430.00 Amazon eBay
Older models: the Turtlebox Gen 2 (ranked lower, rated 2.1/5) and the Turtlebox (ranked lower, rated 2.1/5).
Pros: Waterproof (IP67, and it floats) and crushproof, with stainless steel hardware and quality amplifier parts inside. Loud for its class: Williston Audio Labs measured 102 dB at max volume, well above a Kicker BF400’s 96 dB. A big 85Wh battery rated for 25+ hours, a USB-C output that charges other devices, aux and microphone inputs, and true multi-speaker Party Mode on top of stereo pairing, plus Bluetooth 5.4. Measured bass extension of ~65Hz (-10dB).
Cons: Sounds basically identical to the original and the Gen 2: each generation mainly added features, not sound quality. The amp is tuned to a V shape, with boosted lows and highs and a dip in the mids, but the boost can’t make up for shallow extension: the bass is only down 10dB at about 65Hz, so there’s little real low end despite the boomy upper bass. The amp delivers only about 12W RMS at 1% distortion. In Williston Audio Labs’ side by side test most listeners preferred the much smaller Kicker BF400 for its cleaner sound, and a Pioneer PBM5 played louder at 105 dB. Nowhere near its claimed 120dB at a reasonable measuring distance. Rattles at high volume. It charges only from its own 15V barrel plug brick, not USB-C, and has no app or EQ. Inside is essentially a car audio 6x9 two way speaker in a plastic box.
Full Turtlebox Gen 3 review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~65Hz |
| Battery Capacity | 85Wh |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 12” x 7” x 8.7” (305 x 178 x 222 mm) |
| Drivers | 1x 6x9” (152x228mm) woofer + 1x 1” (25mm) tweeter |
| EQ | No |
| IP Rating | IP67 |
| Maximum SPL | 102dB (measured by Williston Audio Labs) |
| MicroSD Playback | Yes |
| Microphone Input | Yes (3.5mm) |
| Omnidirectional | No |
| Party Mode | Yes (Turtlebox Party Mode) |
| Power Bank | Yes (USB-C) |
| Power Input | DC Barrel Connector (15V/3A) |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 10 lbs (4.54 kg) |
- Links
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