Short answer: both are discontinued, so this only matters if you are buying used. Used, the JBL Partybox 100 is the better pick: it ranks #8 of 46 party speakers by sound quality (rated 4.4/5), against #43 (rated 2.2/5) for the Sony GTK-XB72. If you want one new, the JBL Partybox Club 120 replaces the JBL Partybox 100 and is rated 4.5/5 at $349.95.
The JBL Partybox 100 is the better-sounding, deeper-bass pick. Quite neutral sound, pretty deep bass. Its bass reaches about 41Hz before falling 10dB, against 56Hz for the Sony GTK-XB72. At 21.4 lbs (9.7 kg) it weighs noticeably less than the Sony GTK-XB72 at 26.9 lbs (12.2 kg). Watch for: A slight peak in the upper mids.
The Sony GTK-XB72 is the longer-running option. Exceptional sound quality, powerful bass, vibrant multi-colored LED lights. It is rated for 23 hours of battery against 12 for the JBL Partybox 100. It supports LDAC Bluetooth, which the JBL Partybox 100 lacks. It links with other speakers (Partychain up to 100 speakers), which the JBL Partybox 100 cannot. The tradeoff: No deep bass at all, weird midrange peak, rolled off treble and overall strange tuning.
Buy the JBL Partybox 100 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, buy the JBL Partybox Club 120, which replaces the JBL Partybox 100.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| JBL Partybox 100 | Sony GTK-XB72 | |
|---|---|---|
| Price | $499.99 Discontinued | $349 Discontinued |
| Ranked | #8 of 46 in Party Size Portable Bluetooth Speakers | #43 of 46 in Party Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 41Hz | ~56Hz |
| Battery Life | 12 hours (Manufacturer specified) | 23 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Bluetooth Version | 4.2 | 4.2 |
| Charging Time | 6.5 hours | - |
| Dimensions | 11.3” x 21.7” x 11.4” (288 x 551 x 290 mm) | 13.6” x 25.8” x 14.9” (345 x 656 x 379 mm) |
| EQ | No | No |
| Frequency Response | 45Hz - 18kHz (Manufacturer specified) | - |
| Guitar Input | Yes | - |
| IP Rating | None | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | No | Yes (Partychain up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-A) |
| Power Input | AC Power cord | AC Power cord |
| Stereo | Partially | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | Yes | Yes |
| Weight | 21.4 lbs (9.7 kg) | 26.9 lbs (12.2 kg) |
| Amplifier Power | 160W | - |
| Drivers | 2x 5.25” (133mm) woofers + 2x 2.25” (57mm) tweeters | 10cm driver + passive radiators |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Strap | No | No |
| FM Tuner | - | Yes |
Related Speaker Comparisons
More top alternatives to JBL Partybox 100:
- Sony ULT Tower 7 vs JBL Partybox 100
- JBL Partybox 100 vs JBL Partybox 330
- JBL Partybox 100 vs JBL Partybox Stage 320
- JBL Partybox 100 vs JBL Partybox 310
- Sony ULT Tower 5 vs JBL Partybox 100
Prices on this page were last checked October 12, 2026 at 4:13 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
JBL Partybox 100: $499.99 Discontinued Amazon $499.99 eBay
Newer model: the JBL Partybox Club 120, ranked higher, rated 4.5/5, released Apr 2024. See every JBL PartyBox generation.
Pros: Quite neutral sound, pretty deep bass. Measured bass extension of 41Hz (-10dB).
Cons: A slight peak in the upper mids. Slight TWS issue where the 2nd is slightly delayed. Just as loud and slightly deeper bass than a Tribit Stormbox Blast which is way smaller with better sound quality. Discontinued.
Full JBL Partybox 100 review and specifications →
| Released | Jul 2019 (7 years ago) |
|---|---|
| Amplifier Power | 160W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 41Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Charging Time | 6.5 hours |
| Digital Aux Input | No |
| Dimensions | 11.3” x 21.7” x 11.4” (288 x 551 x 290 mm) |
| Drivers | 2x 5.25” (133mm) woofers + 2x 2.25” (57mm) tweeters |
| EQ | No |
| Frequency Response | 45Hz - 18kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | None |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Stereo | Partially |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 21.4 lbs (9.7 kg) |
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- Head-to-Head Comparisons
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- JBL Partybox 100 vs JBL Partybox Club 120
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- See all 46 comparisons
Sony GTK-XB72: $349 Discontinued eBay
Newer model: the Sony SRS-XP700, ranked higher, rated 4/5, released Apr 2021 (also discontinued). It adds app control and adjustable EQ.
Older model: the Sony GTK-XB90 (ranked higher, rated 2.3/5). See every Sony GTK, XP and XV generation.
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 →
| Released | Mar 2019 (7 years ago) |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~56Hz |
| Battery Life | 23 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 4.2 |
| 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