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Optical class a is a variable bias, plain old class a bias is biased at full tilt no matter if no signal is going into the amplifier. These bias schemes were designed to use less energy and produce l… (View Post)

How long does it play before one channel cuts out? Check out how hot both channels of the amp get before the one channel stops working. (View Post)

I don't know about the dual tweeter sda's, but my 2a's don't have near the bass with the cable unhooked (View Post)

I do believe some people don't get the bass performance from them if they don't use a top quality amplifier. (View Post)

I have those same cables, except mine are terminated on the amp end with rhodium spades to accommodate my amp. They sound great on the apogee duetta 2. (View Post)