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 #24 of 150 medium speakers, rated 4.0/5, at $290.99. The Oontz Angle 3 Ultra ranks #135, rated 2.2/5, at $39.99, $251 cheaper.
What the Harman Kardon Luna does well: Harman Kardon Luna uses 48mm x 90mm woofer, 20mm tweeter. Watch for: Bass is limited by its 57Hz specification.
The case for the Oontz Angle 3 Ultra: 20+ hour battery life: some reviewers see 22-24 hours at 50% volume. 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.
There is a real battery-life gap here: the Oontz Angle 3 Ultra is rated for 20 hours, the Harman Kardon Luna only 12 hours.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Luna | Oontz Angle 3 Ultra | |
|---|---|---|
| Price | $290.99 | $39.99 |
| Ranked | #24 of 150 in Medium Size Portable Bluetooth Speakers | #135 of 150 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) |
Related Speaker Comparisons
More worthwhile head-to-heads for Harman Kardon Luna:
- Harman Kardon Luna vs Earfun Uboom L
- Soundcore Motion 300 vs Harman Kardon Luna
- Soundcore Motion+ vs Harman Kardon Luna
- Soundcore Boost “upgraded” 2021 vs Harman Kardon Luna
- Harman Kardon Luna vs Minirig 4
Prices on this page were last checked September 30, 2026 at 2:57 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.
The Two Speakers In Full
Harman Kardon Luna: $290.99 Amazon eBay
Newer model: the Harman Kardon Luna 2, ranked higher, rated 4.1/5.
Pros: Harman Kardon Luna uses 48mm x 90mm woofer, 20mm tweeter. Its 1.13 kg, claimed 12 hours (Manufacturer specified) battery life, IP67 protection and mono playback make it a practical option for its intended room or portable use. The sound is fairly balanced apart from the boosted bass. Measured bass extension of 57Hz (-10dB).
Cons: Bass is limited by its 57Hz specification. There is no companion app. No EQ adjustment. Boosted bass, and less detailed than higher-ranked speakers.
Full Harman Kardon Luna review and specifications →
| Amplifier Power | 40W |
|---|---|
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 57Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| MicroSD Playback | No |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 2.5 lbs (1.13 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Harman Kardon Luna vs Harman Kardon Luna 2
- Harman Kardon Luna vs Bogasing G4
- Harman Kardon Luna vs Tribit Maxsound Plus/Thunderbox Plus
- Harman Kardon Luna vs JBL Charge 5 Wifi
- Harman Kardon Luna vs Tribit Xsound Mega
- Harman Kardon Luna vs JBL Charge 5
- Harman Kardon Luna vs Xiaomi Sound Party
- Harman Kardon Luna vs Soundcore Boom 3i
- See all 129 comparisons
Oontz Angle 3 Ultra: $39.99 Amazon eBay
Pros: 20+ hour battery life: some reviewers see 22-24 hours at 50% volume. IPX7 rated and very light (0.9 lb). Inexpensive for the feature set. Measured bass extension of ~90Hz (-10dB).
Cons: Very little bass with horrible upper bass thud at higher levels
Full Oontz Angle 3 Ultra review and specifications →
| Amplifier Power | 14W |
|---|---|
| App | Yes (OontZ app) |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~90Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.4 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 6.5” x 2.8” x 2.8” (165 x 71 x 70 mm) |
| Drivers | 2x precision drivers + 1x passive bass radiator |
| EQ | Yes (App EQ) |
| IP Rating | IPX7 |
| Maximum SPL | 86dB (Manufacturer specified) |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 0.9 lbs (400 g) |
- Links
- 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
- Oontz Angle 3 Ultra vs Ultimate Ears Megaboom 4
- Oontz Angle 3 Ultra vs Tribit Stormbox Mini+
- Oontz Angle 3 Ultra vs W-King D8 Mini
- Oontz Angle 3 Ultra vs Marshall Emberton II
- Oontz Angle 3 Ultra vs Marshall Emberton III
- Oontz Angle 3 Ultra vs Ultimate Ears Boom 4
- Oontz Angle 3 Ultra vs Ultimate Ears Wonderboom 4
- Oontz Angle 3 Ultra vs Soundcore 2
- See all 33 comparisons