Short answer: the Harman Kardon Luna for better sound quality, the Sony XB33 for the lower price. The Harman Kardon Luna ranks #22 of 136 medium speakers at $290.99. The Sony XB33 ranks #59 at $110, $180.99 cheaper.
What the Harman Kardon Luna offers: Pretty balanced sound besides the boosted bass. Watch for: Not stereo. Boosted bass, not as detailed as higher ranked speakers
What the Sony XB33 offers: IP67 rated and lightweight (2.4 lb). App-controlled color LED lighting, Party Connect links up to 100 speakers. ~19 hour real-world battery without lights. Watch for: Not very loud. Upper bass peaks, midrange dip, upper midrange peaks, not very neutral. Speaker will not remain at max volume and will turn itself down automatically.
Buy the Harman Kardon Luna if sound quality is the priority over the price, or the Sony XB33 if the price is the priority over sound quality.
Battery life favors the Sony XB33: rated for 24 hours against 12 hours for the Harman Kardon Luna.
Specifications Side By Side
| Harman Kardon Luna | Sony XB33 | |
|---|---|---|
| Price | $290.99 | $110 |
| Ranked | #22 of 136 in Medium Size Portable Bluetooth Speakers | #59 of 136 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes (Sony Music Connect App) |
| Aux Input | No | No |
| Bass Extension (-10dB) | 57Hz | 50Hz |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| EQ | No | Yes (3 band) |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | No | - |
| Power Input | USB-C | - |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | - |
| USB Playback | Yes | - |
| Weight | 2.5 lbs / 1.13 kg | 2.4 lbs / 1.1 kg |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 8.3" x 3.1" x 3.1" (210 x 78 x 80 mm) | 9.7" x 3.8" x 4.2" (246 x 97 x 106 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Output Power | 40W | 16W RMS |
| Digital Aux Input | No | No |
| Bluetooth Latency | - | 110ms |
| Max Volume | - | 97dB |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Power Bank | - | Yes (USB-A) |
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Prices on this page were last checked August 27, 2026 at 10:09 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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The Two Speakers In Full
Harman Kardon Luna: $290.99 Amazon eBay
Pros: Pretty balanced sound besides the boosted bass.
Cons: Not stereo. Boosted bass, not as detailed as higher ranked speakers
Full Harman Kardon Luna review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 57Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| 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 |
| Output Power | 40W |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 2.5 lbs / 1.13 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Oluv Patreon: Harman Kardon Luna - sound demo More from Oluv’Sone →
- Alan Ross Reviews: Beats Pill vs Harman Luna vs Bose Flex vs Soundcore Motion Plus More from alanrossreviews →
- Storytripper HD: Klipsch Nashville vs Harman Kardon Luna vs Soundcore Motion 300 More from storytripperhd →
- Reddit Search for Harman Kardon Luna Review
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- Harman Kardon Luna vs JBL Flip 7
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Sony XB33: $110 eBay
Pros: IP67 rated and lightweight (2.4 lb). App-controlled color LED lighting, Party Connect links up to 100 speakers. ~19 hour real-world battery without lights.
Cons: Not very loud. Upper bass peaks, midrange dip, upper midrange peaks, not very neutral. Speaker will not remain at max volume and will turn itself down automatically.
Full Sony XB33 review and specifications →
| App | Yes (Sony Music Connect App) |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Latency | 110ms |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 9.7" x 3.8" x 4.2" (246 x 97 x 106 mm) |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| EQ | Yes (3 band) |
| IP Rating | IP67 |
| Max Volume | 97dB |
| Omnidirectional | No |
| Output Power | 16W RMS |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Stereo | Yes |
| Weight | 2.4 lbs / 1.1 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Sony xb33 vs xb43 vs Soundcore Motion Plus speakers test More from alanrossreviews →
- Alan Ross Reviews: JBL Charge 5 vs Motion Plus and Sony XB33 - ultimate travel speaker 2021 🤗
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