These sit in different size classes, so this is not a straight ranking comparison. The Soundcore Motion Boom ranks #14 of 103 large speakers by sound quality at $109.99; the Harman Kardon Go + Play 2 ranks #23 of 91 boombox speakers by sound quality at $350.
The Soundcore Motion Boom is the louder, longer-running option. 30W loud bass-heavy sound, excellent budget-friendly value. Alan Ross Reviews measured it at 106dB at full volume, against 99dB for the Harman Kardon Go + Play 2. It is rated for 24 hours of battery against 8 for the Harman Kardon Go + Play 2. At 3.3 lbs (1.5 kg) it weighs noticeably less than the Harman Kardon Go + Play 2 at 5.3 lbs (2.4 kg). The catch: Not as neutral or detailed as other top ranked speakers.
The Harman Kardon Go + Play 2 is the deeper-bass choice. 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. Its bass reaches about 40Hz before falling 10dB, against 53Hz for the Soundcore Motion Boom. It keeps a wired aux input, which the Soundcore Motion Boom lacks. It links with other speakers (Wireless Dual Sound), which the Soundcore Motion Boom cannot. The tradeoff: Not as loud as others.
One note: the Soundcore Motion Boom is discontinued, but it still ranks #14 of 103 large speakers by sound quality, ahead of most of what is still sold new, so it is worth considering used. The Soundcore Motion Boom’s replacement, the Soundcore Boom 2, is rated 4.5/5 at $91.99.
Buy the Soundcore Motion Boom ($109.99) for a large speaker; the Harman Kardon Go + Play 2 ($350) suits a boombox speaker instead.
Water resistance is not close: the Soundcore Motion Boom is rated at IPX7 (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
| Soundcore Motion Boom | Harman Kardon Go + Play 2 | |
|---|---|---|
| Price | $109.99 Discontinued | $350 Discontinued |
| Ranked | #14 of 103 in Large Size Portable Bluetooth Speakers | #23 of 91 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 53Hz | 40Hz |
| Battery Life | 24 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | IPX7 | None |
| Bluetooth Latency | 170ms | 33ms |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | 99dB (measured by Alan Ross Reviews) |
| Party Mode | No | Yes (Wireless Dual Sound) |
| Power Bank | Yes (USB-A) | No |
| Power Input | USB-C | AC Power brick |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Weight | 3.3 lbs (1.5 kg) | 5.3 lbs (2.4 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Bluetooth Version | 5.0 | 4.1 |
| Dimensions | 13.6” x 7.9” x 5.8” (346 x 200 x 148 mm) | 20” x 9” x 9.5” (508 x 228.6 x 241.3 mm) |
| Drivers | 2x 63.5mm titanium fullrange drivers + 2x passive radiators | 2x 90mm (3.5”) woofers (front and rear firing) + 2x 20mm tweeters |
| Amplifier Power | 30W | 100W AC / 30W battery |
| Digital Aux Input | No | No |
| Aux Latency | - | 0ms |
| USB Playback | - | No |
| Strap | - | No |
Watch Them Compared
Videos and reviews that test both speakers side by side.
Related Speaker Comparisons
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Prices on this page were last checked October 10, 2026 at 5:37 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
Soundcore Motion Boom: $109.99 Discontinued Amazon eBay
Newer model: the Soundcore Boom 2, ranked higher, rated 4.5/5, released Mar 2024. It adds party mode, but drops the built-in mic. See every Soundcore Boom generation.
Pros: 30W loud bass-heavy sound, excellent budget-friendly value. 10,000mAh battery for 24 hours claimed (15-18 hours with BassUp engaged at high volume). Waterproof, buoyant design, convenient carry handle. PowerIQ USB port charges devices. BassUp feature works well with clear mids/highs. Measured bass extension of 53Hz (-10dB).
Cons: Not as neutral or detailed as other top ranked speakers. Discontinued.
Full Soundcore Motion Boom review and specifications →
| Released | Dec 2020 (5 years ago) |
|---|---|
| Amplifier Power | 30W |
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 53Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 170ms |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 13.6” x 7.9” x 5.8” (346 x 200 x 148 mm) |
| Drivers | 2x 63.5mm titanium fullrange drivers + 2x passive radiators |
| EQ | Yes |
| IP Rating | IPX7 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 3.3 lbs (1.5 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: This is shocking! They broke the world pound for pound champ! 😢 More from alanrossreviews →
- Alan Ross Reviews: Soundcore Motion Boom vs JBL Xtreme 3 LG PN7 & Minirig mk3 💯👍
- Alan Ross Reviews: Mifa Wildbox vs Soundcore Motion Boom Review! its a close one! 💯
- Alan Ross Reviews: Minirig mk3 2.2 (2x subwoofers) vs 2x Soundcore Motion Booms 🤑
- Alan Ross Reviews: 2x Soundcore Boost (stereo) vs Motion Boom and Motion+ - Best Soundcore speaker? 😋
- Alan Ross Reviews: Marshall Stockwell 2 vs Soundcore Motion Boom and Motion Plus! expensive is better?
- Alan Ross Reviews: W-King X10 (70w) vs Soundcore Motion Boom (30w) - value for money? 🤑
- Alan Ross Reviews: Ultimate Soundcore Boom 2 Review - Is It Worth The Hype?
- Alan Ross Reviews: Dockin D Fine+ 2 vs Soundcore Motion Boom 50w vs 30w 😱
- Alan Ross Reviews: W-King T9 or Soundcore Motion Boom - King vs World Champion! 👌
- Alan Ross Reviews: Soundcore Motion Boom vs W-King D8 and D9 - boom boom! 🥳
- Alan Ross Reviews: Doss Soundbox xl vs Soundcore Motion boom and Plus - woopeeeee!!!!!!!!
- Techder Audios: SONY XG300 VS SOUNDCORE MOTION BOOM More from techderaudios →
- Alan Ross Reviews: JBL Xtreme 3 vs Soundcore Motion Boom vs Rave Neo - Boombox Battle!
- Alan Ross Reviews: Soundcore Motion Boom vs W-King D8 and D9 - boom boom! 🥳
- Alan Ross Reviews: HK Go+ Play vs Soundcore Motion Boom - biggest bass battle ever!!!!!!!!!!!!
- Jagist reviews: Soundcore Motion Boom vs Altec Lansing Mix 2.0 More from Jagistreviews →
- Alan Ross Reviews: Tribit Stormbox Blast compared to the 2022 StormBox Blast, i wasn’t expecting this!
- CEONTHEMAKING: Soundcore Boom 2 - HANDS DOWN The Best Speaker Under $150! More from CEONTHEMAKING →
- Snow Queen’s Tech: ANKER SOUNDCORE SELECT PRO VS MOTION BOOM - DO THEY SOUND THE SAME? SOUND TEST ( PLEASE WEAR 🎧)
- Alan Ross Reviews: Tribit Stormbox Blast or two Motion Boom Pluses for best cheap boombox?
- Alan Ross Reviews: Soundcore Motion x600 (best speaker ever) or two motion booms?
- Alan Ross Reviews: Longest I have ever been, and I don’t care who sees it! ❤
- Head-to-Head Comparisons
- Soundcore Motion Boom vs Harman Kardon Citation 200
- Soundcore Motion Boom vs Soundcore Select Pro
- Soundcore Motion Boom vs B&O Beoplay A2 active
- Soundcore Motion Boom vs Marshall Stockwell II
- Soundcore Motion Boom vs Bose SoundLink Max
- Soundcore Motion Boom vs JBL Xtreme 3
- Soundcore Motion Boom vs Soundcore Boom 2
- Soundcore Motion Boom vs Mifa Wildbox
- See all 56 comparisons
Harman Kardon Go + Play 2: $350 Discontinued eBay
Newer model: the Harman Kardon Go + Play 3, ranked higher, rated 4.4/5, released Jul 2023. It adds power bank charging, app control, adjustable EQ and stereo pairing, but drops party mode. See every Harman Kardon Go + Play generation.
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 →
| Released | Jul 2019 (7 years ago) |
|---|---|
| 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
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