Short answer: the Yeahbox Sonic Boom Max 3, with the caveat that its specs are manufacturer-claimed. It lists 200W RMS (300W peak) in a true 3-way, 5-driver array, but it is a budget import brand with limited independent testing. The Aiwa Exos-9 still sounds great even against today’s models, yet it is no longer sold new, its features are lacking, and it is generally not recommended anymore.
The case for the Aiwa Exos-9: Still a great sounding speaker even against today’s models. The tradeoff: Features are lacking, generally not recommended anymore, not sold new anymore.
What the Yeahbox Sonic Boom Max 3 gets right: 200W RMS (300W peak) true 3-way, 5-driver array. Set against that: A budget import brand with limited independent testing - specs are manufacturer-claimed.
Worth knowing: the Aiwa Exos-9 is discontinued, though it still ranks #8 of 75 boombox speakers by sound quality, so a used unit beats most of what is still sold new.
Buy the Aiwa Exos-9 if sound quality matters more than the price. Buy the Yeahbox Sonic Boom Max 3 if the price matters more than sound quality.
Water resistance is not close: the Yeahbox Sonic Boom Max 3 is rated at IPX6 (powerful water jets), well ahead of the Aiwa Exos-9 at no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Aiwa Exos-9 | Yeahbox Sonic Boom Max 3 | |
|---|---|---|
| Price | $250 Discontinued | $228.99 |
| Ranked | #8 of 75 in Boombox Size Portable Bluetooth Speakers | #40 of 75 in Boombox Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 44Hz | - |
| Battery Life | 10 hours (Manufacturer specified) | 111Wh (14.8V/7,500mAh) (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes | - |
| EQ | Yes (5-band graphic EQ + 4 presets) | Yes |
| IP Rating | None | IPX6 |
| Party Mode | No | - |
| Power Input | AC Power cable | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 15.2 lbs (6.9 kg) | 16.8 lbs (7.64 kg) |
| Power Bank | Yes (USB-A) | - |
| USB Playback | No | Yes |
| FM Tuner | No | - |
| Microphone Input | Yes (with adapter) | - |
| Amplifier Power | 200W | 200W RMS / 300W Peak |
| Dimensions | 19.4" x 7.5" x 11.7" (492.8 x 190.5 x 297.2 mm) | 20.7" x 8.3" x 10.6" (525 x 210 x 268 mm) |
| Drivers | 6.5" dual voice coil woofer + 2x 3" midwoofers + 2x 1" silk dome tweeters | 189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters |
| Discontinued | Yes | - |
| Digital Aux Input | No | No |
| Bluetooth Version | 4.2 | 5.3 |
| MicroSD Playback | - | Yes |
| Lights | - | Yes |
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Prices on this page were last checked September 22, 2026 at 5:11 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
Aiwa Exos-9: $250 Discontinued eBay
Pros: Aiwa Exos-9 uses 6.5” dual voice coil woofer + 2x 3” midwoofers + 2x 1” silk dome tweeters. Its 6.9 kg, claimed 10 hours (Manufacturer specified) battery life, aux input and stereo playback make it a practical option for its intended room or portable use. Measured bass extension of 44Hz (-10dB).
Cons: Bass is limited by its 44Hz specification. There is no companion app. Discontinued.
Full Aiwa Exos-9 review and specifications →
| Amplifier Power | 200W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 44Hz |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 19.4" x 7.5" x 11.7" (492.8 x 190.5 x 297.2 mm) |
| Discontinued | Yes |
| Drivers | 6.5" dual voice coil woofer + 2x 3" midwoofers + 2x 1" silk dome tweeters |
| EQ | Yes (5-band graphic EQ + 4 presets) |
| FM Tuner | No |
| IP Rating | None |
| Microphone Input | Yes (with adapter) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | AC Power cable |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 15.2 lbs (6.9 kg) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
Yeahbox Sonic Boom Max 3: $228.99 Amazon eBay
Pros: A large 3-way, 5-driver party speaker with claimed 200W RMS output, a 111Wh battery, USB-C fast charging, app EQ, TWS pairing, and aux, USB and microSD playback. Listener comparisons describe powerful bass, strong output and decent mids and highs for outdoor party use.
Cons: There is limited independent testing and the water/dust rating is reported inconsistently across listings. Listener comparisons find it less clear and refined than stronger boombox rivals, so its big bass and output are a better fit for parties than critical listening.
Full Yeahbox Sonic Boom Max 3 review and specifications →
| Amplifier Power | 200W RMS / 300W Peak |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 111Wh (14.8V/7,500mAh) (Manufacturer specified) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 20.7" x 8.3" x 10.6" (525 x 210 x 268 mm) |
| Drivers | 189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters |
| EQ | Yes |
| IP Rating | IPX6 |
| Lights | Yes |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 16.8 lbs (7.64 kg) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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