Short answer: the Diamondboxx L2 for better sound quality, the Sony GTK-XB90 for the lower price. The Diamondboxx L2 ranks #37 of 50 party speakers at $1000. The Sony GTK-XB90 ranks #46 at $429, $571 cheaper.
What the Diamondboxx L2 offers: High-fidelity Class A/B amps with good bass response and clear sound at all volumes. Watch for: Boomyness in the 100hz region.
What the Sony GTK-XB90 offers: Deep punchy EXTRA BASS technology for party use. Watch for: Bass is muddy and not deep, weird midrange peak, rolled off treble and overall strange tuning
Buy the Diamondboxx L2 if sound quality matters more than the price. Buy the Sony GTK-XB90 if the price matters more than sound quality.
If sound quality matters at all to you, skip the Sony GTK-XB90. It ranks near the bottom of the 50 party speakers, so look higher up the list instead.
Specifications Side By Side
| Diamondboxx L2 | Sony GTK-XB90 | |
|---|---|---|
| Price | $1000 | $429 Discontinued |
| Ranked | #37 of 50 in Party Size Portable Bluetooth Speakers | #46 of 50 in Party Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Bluetooth Codecs | aptX HD, SBC | SBC, AAC, LDAC |
| Bluetooth Version | 4.2 | - |
| Charging Time | 9 hours | - |
| Dimensions | 23" x 14.5" x 9.5" (584.2 x 368.3 x 241.3 mm) | - |
| Drivers | 5.5" woofer, 1" tweeter | 12cm drivers + passive radiators |
| EQ | No | No |
| Frequency Response | 40Hz - 22kHz (Manufacturer specified) | - |
| IP Rating | None | None |
| Party Mode | No | Yes (Partychain up to 100 speakers) |
| Power Bank | No | Yes (USB-A, 2.1A) |
| Power Input | AC Power brick | AC Power cord |
| Stereo | Yes | Yes |
| TWS | No | No |
| USB Playback | No | No |
| Weight | 24.3 lbs / 11 kg | 30.9 lbs / 14 kg |
| Output Power | 260W RMS | - |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | ~50Hz |
| Battery Life | - | 16 hours (Manufacturer specified) |
| Discontinued | - | Yes |
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The Two Speakers In Full
Diamondboxx L2: $1000
Pros: High-fidelity Class A/B amps with good bass response and clear sound at all volumes. Fills large spaces at under 50% volume, comparable to medium bookshelf speakers. Stable bass response even at 15-20% volume. 6-48 hours battery on 400+ watts (9 hours full recharge). Built-in 2.1A USB power for charging devices. Over 1000 recharge cycles.
Cons: Boomyness in the 100hz region. Gets distorted. Too much treble. Too expensive.
Full Diamondboxx L2 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bluetooth Codecs | aptX HD, SBC |
| Bluetooth Version | 4.2 |
| Charging Time | 9 hours |
| Digital Aux Input | No |
| Dimensions | 23" x 14.5" x 9.5" (584.2 x 368.3 x 241.3 mm) |
| Drivers | 5.5" woofer, 1" tweeter |
| EQ | No |
| Frequency Response | 40Hz - 22kHz (Manufacturer specified) |
| IP Rating | None |
| Output Power | 260W RMS |
| Party Mode | No |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | No |
| USB Playback | No |
| Weight | 24.3 lbs / 11 kg |
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Sony GTK-XB90: $429 Discontinued
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.
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 Codecs | SBC, AAC, LDAC |
| Digital Aux Input | No |
| Discontinued | Yes |
| Drivers | 12cm drivers + passive radiators |
| EQ | No |
| IP Rating | None |
| 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 |
As an eBay Partner, we may be compensated if you make a purchase.
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons