Short answer: the Harman Kardon Go + Play 3. It ranks #3 of 73 boombox speakers by sound quality at $385; the Harman Kardon Onyx Studio 5 ranks #19 and costs $499.99, so there is not much of a tradeoff to weigh.
What the Harman Kardon Go + Play 3 offers: Warm sound with boosted bass. Deepest bass out of any speaker in this size. The catch: Just a little over half as loud as the higher rated boomboxes. Only 8 hours of battery at medium volume.
On the Harman Kardon Onyx Studio 5 side: Elegant circular design with carrying handle. Bass-heavy with balanced mids and highs. Set against that: Warm sound with boosted bass. 8 hour battery at medium volume. Not at loud as others.
Buy the Harman Kardon Go + Play 3. It ranks higher for sound quality than the Harman Kardon Onyx Studio 5 and costs less, so there is no real case for the other one.
If water resistance matters to you, the Harman Kardon Onyx Studio 5 at IPX7 (brief submersion) holds up far better than the Harman Kardon Go + Play 3 at no water resistance.
Specifications Side By Side
| Harman Kardon Go + Play 3 | Harman Kardon Onyx Studio 5 | |
|---|---|---|
| Price | $385 | $499.99 |
| Ranked | #3 of 73 in Boombox Size Portable Bluetooth Speakers | #19 of 73 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (Harman Kardon One app) | No |
| Aux Latency | 112ms | - |
| Bass Extension (-10dB) | 35Hz | - |
| Battery Life | 8 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Built in Microphone | Yes | Yes |
| EQ | Yes (App EQ) | No |
| IP Rating | None | IPX7 |
| Bluetooth Latency | 120ms | - |
| Max Volume | 103dB | - |
| Power Input | AC Power brick | DC Barrel Connector (19V/2.1A) |
| Stereo | Yes | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | Yes | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) |
| Weight | 10.4 lbs / 4.7 kg | 6.6 lbs / 3 kg |
| Bluetooth Codecs | SBC, AAC | SBC |
| Power Bank | Yes | No |
| Party Mode | No | Yes (Wireless Dual Sound) |
| USB Playback | No | No |
| Bluetooth Version | 5.2 | - |
| Output Power | 160W RMS | 50W |
| Dimensions | 17.3" x 9.4" x 7.6" (439 x 240 x 192 mm) | 11.3" x 11.3" (285.8 x 285.8 mm) |
| Aux Input | Yes | Yes |
| Drivers | 1x 130mm (5") subwoofer + 2x 70mm midrange drivers + 2x 20mm tweeters | 2x 75mm woofers + 2x 20mm tweeters |
| Digital Aux Input | No | No |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- JBL Boombox 4 vs JBL Partybox Encore 2
- JBL Boombox 4 vs Harman Kardon Go + Play 2
- JBL Boombox 3 Wifi vs JBL Boombox 4
- Harman Kardon Onyx Studio 5 vs JBL Boombox 3 Wifi
- Harman Kardon Onyx Studio 5 vs Sonos Move 2
The Two Speakers In Full
Harman Kardon Go + Play 3: $385 Amazon
Pros: Warm sound with boosted bass. Deepest bass out of any speaker in this size. Sound is more natural than the Go + Play2.
Cons: Just a little over half as loud as the higher rated boomboxes. Only 8 hours of battery at medium volume. No water rating.
Setup: Use the hidden EQ modes to adjust the bass up when outside and down when inside. To adjust bass, quickly press the bluetooth and volume down buttons together, the number of light flashes tell you what mode you’re in. To adjust treble, quickly press the volume up and phone buttons at the same time, the number of yellow flashes on the light tell you what mode you are in.
Full Harman Kardon Go + Play 3 review and specifications →
| App | Yes (Harman Kardon One app) |
|---|---|
| Aux Input | Yes |
| Aux Latency | 112ms |
| Bass Extension (-10dB) | 35Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Latency | 120ms |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 17.3" x 9.4" x 7.6" (439 x 240 x 192 mm) |
| Drivers | 1x 130mm (5") subwoofer + 2x 70mm midrange drivers + 2x 20mm tweeters |
| EQ | Yes (App EQ) |
| IP Rating | None |
| Max Volume | 103dB |
| Omnidirectional | No |
| Output Power | 160W RMS |
| Party Mode | No |
| Power Bank | Yes |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 10.4 lbs / 4.7 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: Harman Kardon Go + Play 3 hidden eq modes - world has gone crazy! 🤣
- Alan Ross Reviews: Minirig 2.1 or the Brane X or the Harman Kardon Go Play 3?
- Alan Ross Reviews: JBL Distortion Fest vs my favorite speaker today! I wasn’t expecting this!
- Mateusz Cholewa: BOGASING S8 Pro Max „HiFi” 🎶🧐🆚 Harman Kardon Go Play 3 „HiFi”🔊
- Oluv Patreon: Harman Kardon go+play 3 - best sounding?
- Oluv Patreon: Harman Kardon go+play 3 vs Tribit Stormbox Blast - outdoor soundtest
- Oluv Patreon: Harman Kardon go+play 3 vs JBL Xtreme 4 - first impressions
- Reddit Search for Harman Kardon Go + Play 3 Review
- Head-to-Head Comparisons
- Harman Kardon Go + Play 3 vs JBL Partybox Encore 2
- Harman Kardon Go + Play 3 vs Tribit Stormbox Blast
- Harman Kardon Go + Play 3 vs Earfun Uboom X
- Harman Kardon Go + Play 3 vs JBL Partybox Encore Essential 2
- Harman Kardon Go + Play 3 vs JBL Partybox Encore
- Harman Kardon Go + Play 3 vs JBL Partybox Encore Essential
- Harman Kardon Go + Play 3 vs Harman Kardon Onyx Studio 8
- Harman Kardon Go + Play 3 vs Harman Kardon Onyx Studio 6
- See all 21 comparisons
Harman Kardon Onyx Studio 5: $499.99 Amazon
Pros: Elegant circular design with carrying handle. Bass-heavy with balanced mids and highs. Rechargeable Li-ion battery rated 7-8 hours at 40-50% volume.
Cons: Warm sound with boosted bass. 8 hour battery at medium volume. Not at loud as others.
Full Harman Kardon Onyx Studio 5 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.3" x 11.3" (285.8 x 285.8 mm) |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Output Power | 50W |
| Party Mode | Yes (Wireless Dual Sound) |
| Power Bank | No |
| Power Input | DC Barrel Connector (19V/2.1A) |
| Stereo | Partially (1 woofer) |
| TWS | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) |
| USB Playback | No |
| Weight | 6.6 lbs / 3 kg |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Harman Kardon Onyx Studio 5 vs JBL Boombox 3 Wifi
- Harman Kardon Onyx Studio 5 vs Harman Kardon Go + Play 2
- Harman Kardon Onyx Studio 5 vs JBL Boombox 4
- Harman Kardon Onyx Studio 5 vs JBL Boombox 3
- Harman Kardon Onyx Studio 5 vs Tribit Stormbox Blast 2
- Harman Kardon Onyx Studio 5 vs Zealot S89
- Harman Kardon Onyx Studio 5 vs LG Xboom Stage 301
- Harman Kardon Onyx Studio 5 vs Zealot ZE21
- See all 27 comparisons