French L-ACOUSTICS Acoustics stereo, the stereo surround is super shocking. The singer has the same Shure microphone, and the opening is natural. Akos speakers are high-end grades. Akos is a well-deserved Rolls-Royce in the field of linear array audio. In the 212 London Olympic Games, Martin, a British product, was not recognized, but it used the French brand Akos. Now many domestic star concerts point to Akos, but this brand is a professional performance audio system, not a home audio system.