Short answer: the Harman Kardon Onyx Studio 9, if you are buying new. The Harman Kardon Onyx Studio 5 ranks higher than the ION Pathfinder 280 (#24 vs #100 of 112 boombox speakers) but is discontinued; its replacement, the Harman Kardon Onyx Studio 9, is rated 4.1/5 at $184.99 and is still sold new.
The Harman Kardon Onyx Studio 5 is the better-sounding, lighter choice. An iconic round speaker with warm, relaxed sound and generous bass for casual indoor listening. At 6.6 lbs (3 kg) it weighs much less than the ION Pathfinder 280 at 23.8 lbs (10.8 kg). It is rated IPX7 against IPX5 for the ION Pathfinder 280. It links with other speakers (Wireless Dual Sound), which the ION Pathfinder 280 cannot. The tradeoff: The large bass boost can mask lower-mid detail and make dense mixes muddy.
The ION Pathfinder 280 is the longer-running choice. A wheeled all day event speaker with a very long battery, lights, FM radio and a full graphic EQ that gets loud without strain. It is rated for 100 hours of battery against 8 for the Harman Kardon Onyx Studio 5. It has an adjustable EQ, which the Harman Kardon Onyx Studio 5 lacks. Watch for: Out of the box, the midrange and treble are uneven enough to sound alternately honky and dull, and the bass does not extend as deeply as better party speakers.
Buy the Harman Kardon Onyx Studio 9, the replacement for the discontinued Harman Kardon Onyx Studio 5; it is rated higher for sound quality than the ION Pathfinder 280.
Looking for alternatives? See the complete Portable Bluetooth rankings.
An iconic round speaker with warm, relaxed sound and generous bass for casual indoor listening.
A wheeled all day event speaker with a very long battery, lights, FM radio and a full graphic EQ that gets loud without strain.
Prices on this page were last checked October 31, 2026 at 7:11 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Harman Kardon Onyx Studio 5 | ION Pathfinder 280 | |
|---|---|---|
| Price | $499.99 Discontinued | $199.99 |
| Ranked | #24 of 112 in Boombox Size Portable Bluetooth Speakers | #100 of 112 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 8 hours (Manufacturer specified) | 100 hours (Manufacturer specified) |
| IP Rating | IPX7 | IPX5 |
| Party Mode | Yes (Wireless Dual Sound) | No |
| Power Input | DC Barrel Connector (19V/2.1A) | USB-C |
| Stereo | Partially (1 woofer) | No |
| Omnidirectional | No | No |
| TWS | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) | Yes |
| Weight | 6.6 lbs (3 kg) | 23.8 lbs (10.8 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (High/Low frequency) |
| Power Bank | No | Yes (USB-A) |
| USB Playback | No | Yes |
| Built-in Microphone | Yes | No |
| Amplifier Power | 50W | 120W |
| Dimensions | 11.3” x 11.3” (285.8 x 285.8 mm) | 14.8” x 10.6” x 17.6” (375.9 x 269.2 x 447 mm) |
| Drivers | 120mm woofer + 25mm tweeter + 2x passive radiators | 2x 4” (102mm) drivers |
| Digital Aux Input | No | No |
| Bluetooth Version | 4.2 | 5.0 |
| Strap | No | - |
| Bass Extension (-10dB) | - | 58Hz |
| FM Tuner | - | Yes |
| Microphone Input | - | No |
| Maximum SPL | - | 100dB (Manufacturer specified) |
| Lights | - | Yes |
| Wheels | - | Yes |
Related Speaker Comparisons
How Harman Kardon Onyx Studio 5 compares with other leading options: