Short answer: the GTK-XB90 for party thump, the GTK-XB72 for lights and its own bass claim, though neither ranks well in its class. The XB72 promises exceptional sound quality, powerful bass and vibrant multi-colored LED lights, but the notes say it has no deep bass at all. The XB90 delivers deep punchy EXTRA BASS, though its bass is muddy and not deep, and both share a weird midrange peak, rolled off treble and overall strange tuning. Both are rated below 3.0/5 among the 43 party speakers, and the JBL Partybox Stage 320, ranked #3 at $499.95, is a better place to start if sound quality matters.
Buy the Sony GTK-XB90 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, start with the JBL Partybox Stage 320 instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Sony GTK-XB90 | Sony GTK-XB72 | |
|---|---|---|
| Price | $429 Discontinued | $349 Discontinued |
| Ranked | #39 of 43 in Party Size Portable Bluetooth Speakers | #40 of 43 in Party Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~50Hz | ~56Hz |
| Battery Life | 16 hours (Manufacturer specified) | 23 hours (Manufacturer specified) |
| Party Mode | Yes (Partychain up to 100 speakers) | Yes (Partychain up to 100 speakers) |
| Power Bank | Yes (USB-A, 2.1A) | Yes (USB-A) |
| Power Input | AC Power cord | AC Power cord |
| Weight | 30.9 lbs (14 kg) | 26.9 lbs (12.2 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| App | No | No |
| EQ | No | No |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | No | No |
| USB Playback | No | Yes |
| IP Rating | None | None |
| Drivers | 12cm drivers + passive radiators | 10cm driver + passive radiators |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Dimensions | 13.2” x 26.4” x 13.2” (336 x 670 x 335 mm) | 13.6” x 25.8” x 14.9” (345 x 656 x 379 mm) |
| FM Tuner | - | Yes |
| Strap | - | No |
Related Speaker Comparisons
More top alternatives to Sony GTK-XB90:
- JBL Partybox 330 vs Sony GTK-XB90
- JBL Partybox Stage 320 vs Sony GTK-XB90
- JBL Partybox 310 vs Sony GTK-XB90
- JBL Partybox Club 120 vs Sony GTK-XB90
- JBL Partybox 130 vs Sony GTK-XB90
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
Sony GTK-XB90: $429 Discontinued eBay
Pros: Deep punchy EXTRA BASS technology for party use. 3x 2.36” tweeters + 2x 7.09” woofers, built-in LED lights sync with beat. 16 hours battery claimed (9 hours real-world at moderate volume with lights). Built-in handle, portable one-box design. Fiestable plugin controls party settings and DJ effects. Three-device simultaneous Bluetooth pairing. Measured bass extension of ~50Hz (-10dB).
Cons: Bass is muddy and not deep, weird midrange peak, rolled off treble and overall strange tuning. Discontinued.
Full Sony GTK-XB90 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~50Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Digital Aux Input | No |
| Dimensions | 13.2” x 26.4” x 13.2” (336 x 670 x 335 mm) |
| Drivers | 12cm drivers + passive radiators |
| EQ | No |
| IP Rating | None |
| Lights | Yes |
| Omnidirectional | No |
| Party Mode | Yes (Partychain up to 100 speakers) |
| Power Bank | Yes (USB-A, 2.1A) |
| Power Input | AC Power cord |
| Stereo | Yes |
| TWS | No |
| USB Playback | No |
| Weight | 30.9 lbs (14 kg) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
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