Short answer: the Harman Kardon Go + Play 2. It ranks #18 of 73 boombox speakers by sound quality; the Teufel Boomster 2021 ranks #33.
What the Harman Kardon Go + Play 2 offers: Warm sound with boosted bass. Watch for: Not as loud as others. No water rating.
On the Teufel Boomster 2021 side: Pretty balanced sound, slightly warm. Set against that: Not as deep of bass as above ranked speakers. Boosted mid bass compensating for the lack of bass extension.
Buy the Harman Kardon Go + Play 2 if sound quality matters more than the price. Buy the Teufel Boomster 2021 if the price matters more than sound quality.
If battery life is a priority, the Teufel Boomster 2021 is rated for 18 hours versus 8 hours for the Harman Kardon Go + Play 2.
If water resistance matters to you, the Teufel Boomster 2021 at IPX7 (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 | Teufel Boomster 2021 | |
|---|---|---|
| Price | $350 Discontinued | €250 Discontinued |
| Ranked | #18 of 73 in Boombox Size Portable Bluetooth Speakers | #33 of 73 in Boombox Size Portable Bluetooth Speakers |
| Aux Latency | 0ms | - |
| Bass Extension (-10dB) | 40Hz | - |
| Battery Life | 8 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| IP Rating | None | IPX7 |
| Bluetooth Latency | 33ms | - |
| Max Volume | 99dB | - |
| Party Mode | Yes (Wireless Dual Sound) | No |
| Power Input | AC Power brick | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| TWS | No | Yes |
| Power Bank | No | No |
| USB Playback | No | No |
| Built in Microphone | Yes | No |
| Output Power | 100W AC / 30W battery | 42W RMS |
| Dimensions | 20" x 9" x 9.5" (508 x 228.6 x 241.3 mm) | 14.6" x 7.1" x 5.8" (370 x 180 x 148 mm) |
| Drivers | 2x 90mm (3.5") woofers (front and rear firing) + 2x 20mm tweeters | 1x 110mm (4.3") woofer + 2x 65mm midrange drivers + 2x 20mm tweeters |
| Weight | 5.3 lbs / 2.4 kg | 8.3 lbs / 3.75 kg |
| Discontinued | Yes | Yes |
| Digital Aux Input | No | No |
| Aux Input | - | Yes |
| FM Tuner | - | Yes |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- Tribit Stormbox Blast vs Harman Kardon Onyx Studio 5
- Zealot S89 vs Harman Kardon Onyx Studio 5
- JBL Boombox 4 vs Zealot S95
- Harman Kardon Go + Play 2 vs JBL Boombox 2
- JBL Boombox 2 vs Teufel Boomster 2021
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 |
| Omnidirectional | No |
| 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 Harman Kardon Onyx Studio 5
- Harman Kardon Go + Play 2 vs JBL Boombox 4
- Harman Kardon Go + Play 2 vs JBL Boombox 3 Wifi
- Harman Kardon Go + Play 2 vs Zealot S89
- Harman Kardon Go + Play 2 vs JBL Boombox 3
- Harman Kardon Go + Play 2 vs Zealot ZE21
- Harman Kardon Go + Play 2 vs Tribit Stormbox Blast 2
- Harman Kardon Go + Play 2 vs Zealot ZE41
- See all 32 comparisons
Teufel Boomster 2021: €250 Discontinued
Pros: Pretty balanced sound, slightly warm
Cons: Not as deep of bass as above ranked speakers. Boosted mid bass compensating for the lack of bass extension. Discontinued.
Full Teufel Boomster 2021 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 14.6" x 7.1" x 5.8" (370 x 180 x 148 mm) |
| Discontinued | Yes |
| Drivers | 1x 110mm (4.3") woofer + 2x 65mm midrange drivers + 2x 20mm tweeters |
| EQ | No |
| FM Tuner | Yes |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Output Power | 42W RMS |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 8.3 lbs / 3.75 kg |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
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- Teufel Boomster 2021 vs JBL Boombox 2
- Teufel Boomster 2021 vs Teufel Boomster NG (2017)
- Teufel Boomster 2021 vs Soundcore Boom 2 Plus
- Teufel Boomster 2021 vs Sony ULT Field 7
- Teufel Boomster 2021 vs Soundcore Rave Party 2
- See all 19 comparisons

