Short answer: the Harman Kardon Luna for better sound quality, the Tozo PA2 for the lower price. The Harman Kardon Luna ranks #24 of 150 medium speakers, rated 4.0/5, at $290.99. The Tozo PA2 ranks #118, rated 2.5/5, at $39.99, $251 cheaper.
The case for the Harman Kardon Luna: Harman Kardon Luna uses 48mm x 90mm woofer, 20mm tweeter. Watch for: Bass is limited by its 57Hz specification.
The case for the Tozo PA2: IPX8 rated, rugged fabric-wrapped design. The tradeoff: Quite a bit of bass distortion thudding as you turn the volume up.
Buy the Harman Kardon Luna when sound quality outweighs the price for you, and the Tozo PA2 when the price outweighs sound quality instead.
If battery life is a priority, the Tozo PA2 is rated for 25 hours versus 12 hours for the Harman Kardon Luna.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Harman Kardon Luna | Tozo PA2 | |
|---|---|---|
| Price | $290.99 | $39.99 |
| Ranked | #24 of 150 in Medium Size Portable Bluetooth Speakers | #118 of 150 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes (TOZO App) |
| Aux Input | No | No |
| Bass Extension (-10dB) | 57Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC |
| EQ | No | Yes (16 EQ modes via app) |
| IP Rating | IP67 | IPX8 |
| 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) | 1.2 lbs (540 g) |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) | 7.1” x 2.8” x 3” (180 x 70 x 76 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 2x 1.7-inch full-range drivers + 2x passive radiators (44x49mm each) |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 40W | 16W |
| Digital Aux Input | No | No |
| Built-in Microphone | - | Yes |
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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.
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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
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- Harman Kardon Luna vs Tribit Xsound Mega
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- Harman Kardon Luna vs Soundcore Boom 3i
- See all 129 comparisons
Tozo PA2: $39.99 Amazon eBay
Pros: IPX8 rated, rugged fabric-wrapped design. App offers 16 EQ modes and TWS dual-pairing with a second PA2.
Cons: Quite a bit of bass distortion thudding as you turn the volume up. Bass not that deep. The Tozo PA1 totally outclasses it.
Full Tozo PA2 review and specifications →
| Amplifier Power | 16W |
|---|---|
| App | Yes (TOZO App) |
| Aux Input | No |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.1” x 2.8” x 3” (180 x 70 x 76 mm) |
| Drivers | 2x 1.7-inch full-range drivers + 2x passive radiators (44x49mm each) |
| EQ | Yes (16 EQ modes via app) |
| IP Rating | IPX8 |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.2 lbs (540 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons