Short answer: the Harman Kardon Luna if sound quality matters most, the Oontz Angle 3 Ultra if price matters most. The Harman Kardon Luna ranks #26 of 182 medium speakers, rated 4.0/5, at $290.99. The Oontz Angle 3 Ultra ranks #166, rated 2.2/5, at $39.99, $251 cheaper.
The Harman Kardon Luna is the better-sounding, deeper-bass choice. A fully waterproof speaker with fairly balanced, bass rich sound, a separate tweeter, and stereo pairing with a second unit. Its bass reaches about 57Hz before falling 10dB, against 90Hz for the Oontz Angle 3 Ultra. Watch for: Boosted bass, and less detailed than higher-ranked speakers.
The Oontz Angle 3 Ultra is the longer-running, lighter choice. A cheap, very light waterproof speaker with a long battery and plenty of features for the money. It is rated for 20 hours of battery against 12 for the Harman Kardon Luna. At 0.9 lbs (400 g) it weighs much less than the Harman Kardon Luna at 2.5 lbs (1.13 kg). It keeps a wired aux input, which the Harman Kardon Luna lacks. Watch for: Very little bass with horrible upper bass thud at higher levels.
Buy the Harman Kardon Luna if sound quality is the priority over the price, or the Oontz Angle 3 Ultra if the price is the priority over sound quality.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 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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Specifications Side By Side
| Harman Kardon Luna | Oontz Angle 3 Ultra | |
|---|---|---|
| Price | $290.99 | $39.99 |
| Ranked | #26 of 182 in Medium Size Portable Bluetooth Speakers | #166 of 182 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes (OontZ app) |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 57Hz | ~90Hz |
| Battery Life | 12 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| EQ | No | Yes (App EQ) |
| IP Rating | IP67 | IPX7 |
| MicroSD Playback | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | - |
| Weight | 2.5 lbs (1.13 kg) | 0.9 lbs (400 g) |
| Bluetooth Version | 5.3 | 5.4 |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) | 6.5” x 2.8” x 2.8” (165 x 71 x 70 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 2x precision drivers + 1x passive bass radiator |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 40W | 14W |
| Digital Aux Input | No | No |
| Built-in Microphone | - | Yes |
| Maximum SPL | - | 86dB (Manufacturer specified) |
Where the Ratings Come From
- Harman Kardon Luna: reviews by Oluv, Alan Ross and Mateusz Cholewa.
- Oontz Angle 3 Ultra: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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