The ARE system (Acoustic Resonance Enhancement) is an original process of artificial wood aging exclusive to Yamaha. The instruments made with the woods that benefited from this technology benefit from a wealth of tonal comparable to that found on the instruments "vintage" played for years. This technology is also applied to the L Series 26 and 36 tables. The ARE technology consists of a transformation of the molecular properties of the wood by a very precise action on the temperature and humidity conditions in order to obtain characteristics. acoustics ideal (similar) to those of ancient instruments.