These sit in different size classes, so this is not a straight ranking comparison. The JBL Partybox 330 ranks #2 of 53 party speakers by sound quality at $629.95; the Harman Kardon Onyx Studio 7 ranks #14 of 113 boombox speakers by sound quality at $248.90.
The JBL Partybox 330 is the longer-running, tougher option. A rolling party speaker with deep bass, a removable battery, a light show and inputs for mics and a guitar. It is rated for 18 hours of battery against 8 for the Harman Kardon Onyx Studio 7. It is rated IPX4, while the Harman Kardon Onyx Studio 7 has no water resistance. It has an adjustable EQ, which the Harman Kardon Onyx Studio 7 lacks. The tradeoff: It remains very large and heavy, and the sound improvement over the JBL Partybox Stage 320 is modest rather than transformational.
The Harman Kardon Onyx Studio 7 is the lighter pick. An elegant home portable with warm, spacious sound, strong deep bass, and stereo pairing with a second unit. At 6.4 lbs (2.9 kg) it weighs much less than the JBL Partybox 330 at 37.7 lbs (17.1 kg). The catch: Consumer Reports finds the bass prominent and boomy, mids hazy, treble slightly smeared and the soundstage congested.
Buy the JBL Partybox 330 ($629.95) for a party speaker; the Harman Kardon Onyx Studio 7 ($248.90) suits a boombox speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| JBL Partybox 330 | Harman Kardon Onyx Studio 7 | |
|---|---|---|
| Price | $629.95 | $248.90 |
| Ranked | #2 of 53 in Party Size Portable Bluetooth Speakers | #14 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Battery Life | 18 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 6.0 | 4.2 |
| Charging Time | 3 hours | - |
| Drivers | 2x 6.5” (165mm) woofers + 2x 1” (25mm) PEN dome tweeters | 120mm woofer + 2x 25mm tweeters |
| EQ | Yes (Smart EQ mode) | No |
| Guitar Input | Yes | - |
| IP Rating | IPX4 | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Inputs | Optical | - |
| Party Mode | Yes (Auracast) | Yes (Wireless Dual Sound) |
| Power Bank | Yes (USB-C, 5V/1A) | No |
| Power Input | AC Power cord | DC Barrel Connector (19V/2.1A) |
| Removable Battery | Yes | - |
| Stereo | Partially | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | Yes | No |
| Weight | 37.7 lbs (17.1 kg) | 6.4 lbs (2.9 kg) |
| Amplifier Power | 280W | 50W RMS |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Wheels | Yes | - |
| Dimensions | 26.1”H x 13.1”W x 14.8”D (662.5 x 334 x 375 mm) | 11.3” x 11.3” (285.8 x 285.8 mm) (round design) |
| Strap | No | No |
| Aux Latency | - | 0ms |
| Bass Extension (-10dB) | - | 37Hz |
| Built-in Microphone | - | Yes |
| Bluetooth Latency | - | 266ms |
| Maximum SPL | - | 96dB (measured by Alan Ross Reviews) |
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