These are not really the same size class, and that is the honest framing here. The Minirig 4 with subwoofer ranks #5 of 120 large speakers by sound quality at $290; the Harman Kardon Luna ranks #26 of 179 medium speakers by sound quality at $290.99.
The Minirig 4 with subwoofer is the longer-running choice. A compact speaker and wireless subwoofer pair with some of the most balanced sound available, a long battery and deep, impactful bass. It is rated for 30 hours of battery against 12 for the Harman Kardon Luna. It keeps a wired aux input, which the Harman Kardon Luna lacks. It has an adjustable EQ, which the Harman Kardon Luna lacks. Watch for: Not stereo, app is buggy.
The Harman Kardon Luna is the lighter, tougher option. A fully waterproof speaker with fairly balanced, bass rich sound, a separate tweeter, and stereo pairing with a second unit. At 2.5 lbs (1.13 kg) it weighs noticeably less than the Minirig 4 with subwoofer at 3.2 lbs (1.44 kg). It is rated IP67 against Splash resistant for the Minirig 4 with subwoofer. The tradeoff: Boosted bass, and less detailed than higher-ranked speakers.
Buy the Minirig 4 with subwoofer at $290 for a large speaker, or the Harman Kardon Luna at $290.99 for a medium speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 11, 2026 at 3:26 AM 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
| Minirig 4 with subwoofer | Harman Kardon Luna | |
|---|---|---|
| Price | $290 | $290.99 |
| Ranked | #5 of 120 in Large Size Portable Bluetooth Speakers | #26 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | No |
| Aux Latency | 0ms | - |
| Battery Life | 30 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | Splash resistant | IP67 |
| Bluetooth Latency | 60ms | - |
| Power Bank | Yes (USB-C) | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | No |
| TWS | Yes (Bluetooth or cable) | Yes |
| Weight | 3.2 lbs (1.44 kg) | 2.5 lbs (1.13 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | - |
| Party Mode | No | - |
| Bluetooth Version | 5.0 | 5.3 |
| Dimensions | 4” x 2.9” (101.6 x 73 mm) (diameter x height) | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) |
| Drivers | 70mm custom driver | 48mm x 90mm woofer, 20mm tweeter |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) | 60Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 50W | 40W |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 57Hz |
| MicroSD Playback | - | No |
| USB Playback | - | Yes |
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