Short answer: the Harman Kardon Go + Play 2. It ranks #18 of 73 boombox speakers by sound quality at $350; the Sony ULT Field 7 ranks #40 and costs $400, which makes this an easy call rather than a real tradeoff.
What the Harman Kardon Go + Play 2 offers: Warm sound with boosted bass. Watch for: Not as loud as others. No water rating.
What the Sony ULT Field 7 offers: Better sounding than the XG500 Watch for: Still not as deep bass as the top ranked speakers. 8khz peak
Buy the Harman Kardon Go + Play 2. It ranks higher for sound quality than the Sony ULT Field 7 and costs less, so there is no real case for the other one.
If battery life is a priority, the Sony ULT Field 7 is rated for 30 hours versus 8 hours for the Harman Kardon Go + Play 2.
Water resistance is not close: the Sony ULT Field 7 is rated at IP67 (brief submersion), well ahead of the Harman Kardon Go + Play 2 at no water resistance.
Specifications Side By Side
| Harman Kardon Go + Play 2 | Sony ULT Field 7 | |
|---|---|---|
| Price | $350 Discontinued | $400 |
| Ranked | #18 of 73 in Boombox Size Portable Bluetooth Speakers | #40 of 73 in Boombox Size Portable Bluetooth Speakers |
| Aux Latency | 0ms | - |
| Bass Extension (-10dB) | 40Hz | ~52Hz |
| Battery Life | 8 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| IP Rating | None | IP67 |
| Bluetooth Latency | 33ms | - |
| Max Volume | 99dB | - |
| Party Mode | Yes (Wireless Dual Sound) | Yes (Party Connect up to 100 speakers) |
| Power Input | AC Power brick | AC Power cord |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| App | No | No |
| EQ | No | Yes (App + ULT button) |
| TWS | No | Yes |
| Power Bank | No | Yes (USB-A, 5V/1.5A) |
| USB Playback | No | Yes |
| Built in Microphone | Yes | Yes |
| Output Power | 100W AC / 30W battery | 100W |
| Dimensions | 20" x 9" x 9.5" (508 x 228.6 x 241.3 mm) | 20.2" x 8.8" x 8.7" (512 x 224 x 222 mm) |
| Drivers | 2x 90mm (3.5") woofers (front and rear firing) + 2x 20mm tweeters | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9") tweeters |
| Weight | 5.3 lbs / 2.4 kg | 13.9 lbs / 6.3 kg |
| Discontinued | Yes | - |
| Digital Aux Input | No | No |
| Aux Input | - | Yes |
| Guitar Input | - | Yes |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| Bluetooth Version | - | 5.2 |
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Prices on this page were last checked August 27, 2026 at 10:09 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
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 |
- 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!!!!!!!!!!!!
- 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 49 comparisons
Sony ULT Field 7: $400 Amazon eBay
Pros: Better sounding than the XG500
Cons: Still not as deep bass as the top ranked speakers. 8khz peak
Full Sony ULT Field 7 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~52Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 20.2" x 8.8" x 8.7" (512 x 224 x 222 mm) |
| Drivers | 2x 114mm x 114mm X-Balanced woofers + 2x 46mm (1.9") tweeters |
| EQ | Yes (App + ULT button) |
| Guitar Input | Yes |
| IP Rating | IP67 |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Output Power | 100W |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/1.5A) |
| Power Input | AC Power cord |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 13.9 lbs / 6.3 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: SONY ULT Field 7 💣vs JBL Boombox 3 🧨 Showdown! 🪇Let’s Shake it Up! 🔋Battery Powered Basement Battle More from JaysStraightUpReviews →
- Dominik Reviews: Sony ULT Field 7 vs Tribit Stormbox Blast Both good? 😂 More from Dominik Reviews →
- Reddit Search for Sony ULT Field 7 Review
- Head-to-Head Comparisons
- Sony ULT Field 7 vs Skullcandy Barrel
- Sony ULT Field 7 vs Soundcore Rave Party 2
- Sony ULT Field 7 vs Teufel Boomster NG (2017)
- Sony ULT Field 7 vs JBL Partybox On the Go
- Sony ULT Field 7 vs Sony SRS-XG500
- Sony ULT Field 7 vs W-King T11
- Sony ULT Field 7 vs JBL Boombox
- Sony ULT Field 7 vs Soundcore Motion Boom+
- See all 48 comparisons