Short answer: the Ultimate Ears Hyperboom, narrowly, since both sides have tuning flaws. The Hyperboom’s 2x 4.5” woofers, 2x 1” tweeters and 2x passive radiators deliver strong audio performance, though it is very expensive for what it does and a bit dull and muddy. The GTK-XB72 counters with exceptional sound quality, powerful bass and multi-colored LED lights at $349, but it has no deep bass, a weird midrange peak and rolled off treble.
Buy the Ultimate Ears Hyperboom. It is rated higher for sound quality; the Sony GTK-XB72 is no longer sold new.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Ultimate Ears Hyperboom | Sony GTK-XB72 | |
|---|---|---|
| Price | $399.99 | $349 Discontinued |
| Ranked | #27 of 43 in Party Size Portable Bluetooth Speakers | #40 of 43 in Party Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 55Hz | ~56Hz |
| Battery Life | 24 hours (Manufacturer specified) | 23 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Bluetooth Version | 5.0 | - |
| Charging Time | 2.6 hours | - |
| Dimensions | 7.5” x 7.5” x 14.3” (190 x 190 x 364 mm) | 13.6” x 25.8” x 14.9” (345 x 656 x 379 mm) |
| Drivers | 2x 5.66” woofers, 2x 0.98” tweeters, passive radiators | 10cm driver + passive radiators |
| EQ | No | No |
| IP Rating | None | None |
| Party Mode | Yes (PartyUp up to 50 speakers) | Yes (Partychain up to 100 speakers) |
| Power Bank | No | Yes (USB-A) |
| Power Input | AC Power brick | AC Power cord |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | No | No |
| USB Playback | No | Yes |
| Weight | 13 lbs (5.9 kg) | 26.9 lbs (12.2 kg) |
| Digital Aux Input | No | No |
| Strap | No | No |
| FM Tuner | - | Yes |
| Lights | - | Yes |
Related Speaker Comparisons
How Ultimate Ears Hyperboom compares with other leading options:
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- JBL Partybox 310 vs Ultimate Ears Hyperboom
- Sony ULT Tower 5 vs Ultimate Ears Hyperboom
Prices on this page were last checked October 2, 2026 at 10:18 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
Ultimate Ears Hyperboom: $399.99 Ultimate Ears eBay
Pros: Strong audio performance with 2x 4.5” woofers, 2x 1” tweeters, 2x passive radiators. Up to 24 hours battery at 50% volume (3 hours at max). Adaptive bass compensation for wall-reflective environments. Dual Bluetooth pairing, aux and optical inputs, USB-out for device charging. IPX4 splash-proof. Sliding rubber handle and compact square design. Measured bass extension of 55Hz (-10dB).
Cons: Very expensive for what it does, a bit dull and muddy sound. Not as loud as others in the class. Bass not as deep as a Partybox 100. External power brick for charging.
Full Ultimate Ears Hyperboom review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 55Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Charging Time | 2.6 hours |
| Digital Aux Input | No |
| Dimensions | 7.5” x 7.5” x 14.3” (190 x 190 x 364 mm) |
| Drivers | 2x 5.66” woofers, 2x 0.98” tweeters, passive radiators |
| EQ | No |
| IP Rating | None |
| Omnidirectional | No |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| USB Playback | No |
| Weight | 13 lbs (5.9 kg) |
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Sony GTK-XB72: $349 Discontinued eBay
Pros: Exceptional sound quality, powerful bass, vibrant multi-colored LED lights. ClearAudio+ and Extra Bass technology for dynamic sound. LIVE SOUND button with angled speakers and DSP for 3D sound experience. FM radio, USB, RCA inputs with Music Center app control for lighting effects and EQ. Easy to use with convenient Bluetooth and FM radio. Measured bass extension of ~56Hz (-10dB).
Cons: No deep bass at all, weird midrange peak, rolled off treble and overall strange tuning. Discontinued.
Full Sony GTK-XB72 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~56Hz |
| Battery Life | 23 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Digital Aux Input | No |
| Dimensions | 13.6” x 25.8” x 14.9” (345 x 656 x 379 mm) |
| Drivers | 10cm driver + passive radiators |
| EQ | No |
| FM Tuner | Yes |
| IP Rating | None |
| Lights | Yes |
| Omnidirectional | No |
| Party Mode | Yes (Partychain up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Power Input | AC Power cord |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| USB Playback | Yes |
| Weight | 26.9 lbs (12.2 kg) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons