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This is an old issue when it comes to pro audio products. The ratings that Turbosound provide are the ones that have been obtained through exhaustive testing, and are given in industry standard format, of W continuous and W peak. As the testing signal is a 6 dB crest factor signal, the difference between these values has a 1:4 ratio. The recommended amplifier power would be the old W program value, that has a 2:1 ratio with respect to the W continuous figure.