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    Fosi Audio LC30 Speaker/Amp Switcher & Meter

    I love this as a concept, but what a let down. It look really good (my preference would be black meters with a white needle and white indicators), but the fact that it doesn’t actually measure anything and can’t be calibrated is a dealbreaker. Hey, I’m not looking for the thing to be the...
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    Class B amplifier with SINAD of 120, how is that possible?

    Really close compared to audio power amps that is.
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    Class B amplifier with SINAD of 120, how is that possible?

    A pure class B amp has an efficiency of about 78%. The higher the bias of the class A section of a class AB amp, the lower the efficiency becomes since the class A section never turns off.
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    Class B amplifier with SINAD of 120, how is that possible?

    John Atkinson at Stereophile has been doing that for decades with his test equipment. Yes, because it has infinite bandwidth, a perfect square wave can’t be made, but apparently good test equipment comes really close.
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    Class B amplifier with SINAD of 120, how is that possible?

    A $300, class B, mono block is one of the best amps on the planet. Really? That was really unexpected. First, class D surpassed or equalled amps many times their price. Now, class B surpasses class D and is even cheaper? What’s next? An amp that’s the size of a pack of matches that outputs 300W...
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    Topping B200

    Any chance the Topping B200 will make it onto the bench soon?
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