The Green Mountain Rio loudspeaker combines time coherent technology and a proprietary ‘Balanced-Phase’ crossover circuit to bring an impeccable musicality to medium size and small rooms. So much so, that this discreet little standmount turned out to be one of the most exciting speakers to come my way in years. It might look small and unassuming, but clever design gives it a marvellous freedom from time-smear, which makes it musically very communicative with vivid dynamic expression. Indeed, the only regret is that the Rio, being GMA’s smallest loudspeaker, did have some inevitable [...]

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Previous speakers made from glass have tended to sound rather brittle and bright, but then the construction of a glass speaker is an extremely bold move. Not only is the production process highly complex and expensive, but there are also serious sound quality concerns. But, by incorporating sophisticated damping techniques, Waterfall has refined the process to the point where its latest Evo range is in no way compromised by the material itself. Instead, what you get is a distinctive speaker with the positive benefits of glass, such as high density and rigidity. The question is, can function [...]

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