Short answer: the Harman Kardon Go + Play 2 for better sound quality, the Soundcore Motion Boom+ for the lower price. The Harman Kardon Go + Play 2 ranks #18 of 73 boombox speakers at $350. The Soundcore Motion Boom+ ranks #47 at $140, $210 cheaper.
What the Harman Kardon Go + Play 2 offers: Warm sound with boosted bass. Watch for: Not as loud as others.
What the Soundcore Motion Boom+ offers: 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). Watch for: Default presets are all warm sounding with rolled off treble.
Buy the Harman Kardon Go + Play 2 if sound quality matters more than the price. Buy the Soundcore Motion Boom+ if the price matters more than sound quality.
If battery life is a priority, the Soundcore Motion Boom+ is rated for 20 hours versus 8 hours for the Harman Kardon Go + Play 2.
If water resistance matters to you, the Soundcore Motion Boom+ at IP67 (brief submersion) holds up far better than the Harman Kardon Go + Play 2 at no water resistance.

Specifications Side By Side
| Harman Kardon Go + Play 2 | Soundcore Motion Boom+ | |
|---|---|---|
| Price | $350 Discontinued | $140 after $40 coupon, Discontinued |
| Ranked | #18 of 73 in Boombox Size Portable Bluetooth Speakers | #47 of 73 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 |
| Max Volume | 99dB | 108dB |
| Party Mode | Yes (Wireless Dual Sound) | Yes (PartyCast up to 100 speakers) |
| Power Input | AC Power brick | USB-C |
| Stereo | 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 |
| Output 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 |
| Discontinued | Yes | Yes |
| Digital Aux Input | No | No |
| Aux Input | - | Yes |
| Bluetooth Version | - | 5.3 |
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The Two Speakers In Full
Harman Kardon Go + Play 2: $350 Discontinued
Pros: Warm sound with boosted bass.
Cons: Not as loud as others. No water rating. Discontinued.
Full Harman Kardon Go + Play 2 review and specifications →
| App | No |
|---|---|
| Aux Latency | 0ms |
| Bass Extension (-10dB) | 40Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 33ms |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 20" x 9" x 9.5" (508 x 228.6 x 241.3 mm) |
| Discontinued | Yes |
| Drivers | 2x 90mm (3.5") woofers (front and rear firing) + 2x 20mm tweeters |
| EQ | No |
| IP Rating | None |
| Max Volume | 99dB |
| Output Power | 100W AC / 30W battery |
| Party Mode | Yes (Wireless Dual Sound) |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | No |
| USB Playback | No |
| Weight | 5.3 lbs / 2.4 kg |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Harman Kardon Go+ Play 3 vs Go Play 2, the holy grail has arrived? ✔
- 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!!!!!!!!!!!!
- Reddit Search for Harman Kardon Go + Play 2 Review
- Head-to-Head Comparisons
- Harman Kardon Go + Play 2 vs JBL Boombox 2
- Harman Kardon Go + Play 2 vs JBL Authentics 300
- Harman Kardon Go + Play 2 vs B&O Beolit 20
- Harman Kardon Go + Play 2 vs Harman Kardon Go + Play 3
- Harman Kardon Go + Play 2 vs Sony SRS-XG500
- Harman Kardon Go + Play 2 vs Demerbox DB2
- Harman Kardon Go + Play 2 vs Bumpboxx Flare 6
- Harman Kardon Go + Play 2 vs Turtlebox Gen 2
- See all 10 comparisons
Soundcore Motion Boom+: $140 after $40 coupon, Discontinued Amazon
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.
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 →
| App | Yes (Soundcore app) |
|---|---|
| Aux Input | Yes |
| Aux Latency | 17ms |
| Bass Extension (-10dB) | 52Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| 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) |
| Discontinued | Yes |
| Drivers | 30W: Dual drivers |
| EQ | Yes (App EQ) |
| IP Rating | IP67 |
| Max Volume | 108dB |
| Output Power | 80W |
| Party Mode | Yes (PartyCast up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 5.3 lbs / 2.4 kg |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Soundcore Motion Boom Plus & Earfun UBoom X - sound test
- Alan Ross Reviews: Tribit Stormbox Blast or Soundcore Motion Boom Plus or W King D10? 🤪
- 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
- Reddit Search for Soundcore Motion Boom+ Review
- Head-to-Head Comparisons

