The Harman Kardon Luna 2 is a portable speaker that looks comfortable staying on a shelf. Its aluminum grilles, compact shape and ambient light ring give it a domestic feel, while IP67 protection makes occasional outdoor use practical.
Its sound is most persuasive with voices, according to the independent review considered here. There are stronger choices for bass weight and rhythmic drive, so the Luna 2 is best viewed as a compact everyday speaker whose presentation and styling are both part of the decision.
Sound
- 40 W RMS two-way system
- App presets and custom EQ
What Hi-Fi? found the Luna 2 particularly articulate through the midrange, with clear vocal projection and useful instrument separation. It also heard bright treble and preferred the JBL Charge 6 for bass fullness, dynamic impact and timing. Those distinctions give a useful direction for choosing between them. 1
If singer-led music and spoken material occupy much of the playlist, the Luna 2’s reported strengths are relevant. For bass-heavy tracks at a gathering, a more substantial low end may matter more. App EQ provides room for preference changes, although it cannot turn a compact cabinet into a larger system.
Connectivity
- Bluetooth 5.4
- Two connected source devices
- AirTouch and Auracast
Two-device connectivity makes sharing music easier. You can keep a phone and another source ready without repeatedly clearing and recreating the connection. Ordinary playback is handled over Bluetooth.
AirTouch pairs two Luna 2 speakers for left and right stereo by bringing them close together. Auracast supports group playback with compatible Harman Kardon speakers. That creates a path to a wider setup, but it is worth checking the exact companion models before assuming universal compatibility.
The USB-C connection is for charging, with the manual describing its data function as service-only. Choose a different speaker if a cable from a laptop is an important part of the planned music setup.
Lighting & controls
- Six ambient themes
- Harman Kardon One app
The light ring is a major part of the Luna 2’s identity. What Hi-Fi? described it as restrained and found the effect less visible in strong daylight. That makes it especially suited to an evening shelf or table position where a small amount of light contributes to the room. 1
The app adjusts colors, patterns and audio settings, and handles updates. Lighting can also be disabled when it is unwanted. A product chosen partly for appearance should still be comfortable to use with the effects turned off.
Battery & design
The manufacturer’s 12-hour estimate is enough to make a long afternoon plausible, but runtime changes with volume and content. It is a less generous headline than the endurance of several slightly larger portables. Charging before a day away from power is a sensible habit.
The contoured body makes it easy to pick up, and the 735 g mass is modest for moving between rooms. IP67 protection is welcome around dust and accidental water exposure. The manual also describes a charging-port warning if contamination is detected, reinforcing the need to let the connector dry.
Alternatives
The JBL Charge 6 offers a longer battery claim, USB music playback and phone charging, with a more forceful presentation in What Hi-Fi?’s comparison. 1 The Edifier ES60 provides USB-C computer audio and a microphone if desktop use matters more than maximum portability.
Verdict
The Luna 2 is attractive for listeners who value voices, compact proportions and subtle lighting. Its treble character and shorter stated endurance keep it from being the automatic choice for every outing. It works best when the home listening role is as important as portability.