Short answer: the Harman Kardon Go + Play 2. It ranks #23 of 89 boombox speakers by sound quality, rated 3.9/5, at $350. The Soundcore Motion Boom+ ranks #62, rated 2.9/5, at $122.42, $227.58 cheaper, not enough of a saving to outweigh the sound-quality gap.
What the Harman Kardon Go + Play 2 does well: At 2.4 kg, Harman Kardon Go + Play 2 combines 2x 90mm (3.5”) woofers (front and rear firing) + 2x 20mm tweeters with Bluetooth. Watch for: Bass is limited by its 40Hz specification.
The case for the Soundcore Motion Boom+: 80W stereo from dual 30W woofers + dual 10W tweeters with titanium drivers for treble clarity. Watch for: Default presets are all warm sounding with rolled off treble.
Worth knowing: the Harman Kardon Go + Play 2 is discontinued, though it still ranks #23 of 89 boombox speakers by sound quality, so a used unit beats most of what is still sold new.
Buy the Harman Kardon Go + Play 2. It is rated higher for sound quality, and the $227.58 saving on the Soundcore Motion Boom+ is not enough to make up the difference.
Water resistance is not close: the Soundcore Motion Boom+ is rated at IP67 (brief submersion), well ahead of the Harman Kardon Go + Play 2 at no water resistance.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Go + Play 2 | Soundcore Motion Boom+ | |
|---|---|---|
| Price | $350 Discontinued | $122.42 after $40 coupon, Discontinued |
| Ranked | #23 of 89 in Boombox Size Portable Bluetooth Speakers | #62 of 89 in Boombox Size Portable Bluetooth Speakers |
| Aux Latency | 0ms | 17ms |
| Bass Extension (-10dB) | 40Hz | 52Hz |
| Battery Life | 8 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| IP Rating | None | IP67 |
| Bluetooth Latency | 33ms | 33ms |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) | 108dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (Wireless Dual Sound) | Yes (PartyCast up to 100 speakers) |
| Power Input | AC Power brick | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | Yes (Soundcore app) |
| EQ | No | Yes (App EQ) |
| TWS | No | Yes |
| Power Bank | No | Yes (USB-A, 5V/2.1A) |
| USB Playback | No | No |
| Built-in Microphone | Yes | No |
| Amplifier Power | 100W AC / 30W battery | 80W |
| Dimensions | 20” x 9” x 9.5” (508 x 228.6 x 241.3 mm) | 15.1” x 5.1” x 7.7” (384 x 130 x 196 mm) |
| Drivers | 2x 90mm (3.5”) woofers (front and rear firing) + 2x 20mm tweeters | 30W: Dual drivers |
| Weight | 5.3 lbs (2.4 kg) | 5.3 lbs (2.4 kg) |
| Digital Aux Input | No | No |
| Aux Input | Yes | Yes |
| Bluetooth Version | 4.1 | 5.3 |
| Strap | No | Yes (detachable strap) |
Related Speaker Comparisons
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- Tribit Stormbox Blast vs Harman Kardon Go + Play 2
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- JBL Partybox Encore 2 vs Harman Kardon Go + Play 2
- JBL Partybox Encore Essential 2 vs Harman Kardon Go + Play 2
- JBL Partybox Encore vs Harman Kardon Go + Play 2
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
Harman Kardon Go + Play 2: $350 Discontinued eBay
Newer model: the Harman Kardon Go + Play 3, ranked higher, rated 4.4/5.
Pros: At 2.4 kg, Harman Kardon Go + Play 2 combines 2x 90mm (3.5”) woofers (front and rear firing) + 2x 20mm tweeters with Bluetooth. Claimed 8 hours (manufacturer specified) battery life, up to 99db and stereo playback make its feature set practical for its intended room or portable use. Measured bass extension of 40Hz (-10dB).
Cons: Bass is limited by its 40Hz specification. There is no companion app. No EQ adjustment. Not as loud as others. Discontinued.
Full Harman Kardon Go + Play 2 review and specifications →
| Amplifier Power | 100W AC / 30W battery |
|---|---|
| App | No |
| Aux Input | Yes |
| Aux Latency | 0ms |
| Bass Extension (-10dB) | 40Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 33ms |
| Bluetooth Version | 4.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 20” x 9” x 9.5” (508 x 228.6 x 241.3 mm) |
| Drivers | 2x 90mm (3.5”) woofers (front and rear firing) + 2x 20mm tweeters |
| EQ | No |
| IP Rating | None |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Wireless Dual Sound) |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| USB Playback | No |
| Weight | 5.3 lbs (2.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Harman Kardon Go+ Play 3 vs Go Play 2, the holy grail has arrived? ✔ More from alanrossreviews →
- Alan Ross Reviews: JBL Boombox 2 bass monster or the mature Harman Kardon Go+ Play 2 mini for bass?? 💥
- Alan Ross Reviews: Tribit Stormbox Blast or Harman Kardon Go+ Play 2 Mini by an old bloke!
- Alan Ross Reviews: Harman Kardon Go+ Play 2 mini or Onyx Studio 6 - best speaker for bass?
- Alan Ross Reviews: Soundcore Motion Boom Plus vs Harman Kardon Go+ Play 2 mini - party vs HiFi
- Alan Ross Reviews: Bag of Riddim vs Harman Kardon Go+ Play 2 - boom boom in da room! 🥳
- Alan Ross Reviews: HK Go+ Play vs Soundcore Motion Boom - biggest bass battle ever!!!!!!!!!!!!
- Head-to-Head Comparisons
- Harman Kardon Go + Play 2 vs Harman Kardon Onyx Studio 5
- Harman Kardon Go + Play 2 vs JBL Boombox 3 Wifi
- Harman Kardon Go + Play 2 vs JBL Boombox 4
- Harman Kardon Go + Play 2 vs JBL Boombox 3
- Harman Kardon Go + Play 2 vs Zealot S89
- Harman Kardon Go + Play 2 vs Zealot ZE21
- Harman Kardon Go + Play 2 vs Zealot ZE41
- Harman Kardon Go + Play 2 vs Tribit Stormbox Blast 2
- See all 49 comparisons
Soundcore Motion Boom+: $122.42 after $40 coupon Discontinued Amazon eBay
Newer model: the Soundcore Boom 2 Plus, ranked higher, rated 3.6/5.
Pros: 80W stereo from dual 30W woofers + dual 10W tweeters with titanium drivers for treble clarity. 13,400mAh battery for 20 hours (12-15 at high volume). IP67 waterproof, floats, rugged build inspires confidence. Bluetooth 5.3 multipoint pairing, Soundcore app EQ, PartyCast 2.0 mode. USB-C input, USB-A output for powerbank. Measured bass extension of 52Hz (-10dB).
Cons: Default presets are all warm sounding with rolled off treble. Will need a custom EQ to get closer to neutral. A shrill sounding 6kHz peak comes out when volume is above about 60%. Not much deeper bass than a Motion Boom and a lot less deep bass than other speakers in the class. Discontinued.
Full Soundcore Motion Boom+ review and specifications →
| Amplifier Power | 80W |
|---|---|
| App | Yes (Soundcore app) |
| Aux Input | Yes |
| Aux Latency | 17ms |
| Bass Extension (-10dB) | 52Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 33ms |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 15.1” x 5.1” x 7.7” (384 x 130 x 196 mm) |
| Drivers | 30W: Dual drivers |
| EQ | Yes (App EQ) |
| IP Rating | IP67 |
| Maximum SPL | 108dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (PartyCast up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| USB Playback | No |
| Weight | 5.3 lbs (2.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Soundcore Motion Boom Plus & Earfun UBoom X - sound test More from Oluv’Sone →
- Alan Ross Reviews: Tribit Stormbox Blast or Soundcore Motion Boom Plus or W King D10? 🤪 More from alanrossreviews →
- Alan Ross Reviews: Tribit Stormbox Blast Review vs Soundcore Motion Boom Plus - cheap bass!
- DLX Willington: Tough Game! Tribit Stormbox Blast vs Soundcore Motion Boom Plus Binaural sound samples More from DLXWillington →
- Head-to-Head Comparisons
- Soundcore Motion Boom+ vs JBL Boombox
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- Soundcore Motion Boom+ vs W-King H10
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- Soundcore Motion Boom+ vs Sony ULT Field 7
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- See all 47 comparisons