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0 µV RMS within the audio band
By adding a volume control and input selector
In addition to the main ±12 V output
which shows the THD+N vs input level
Open and natural midrange
Guardian-86 Connectors & Parts 0 µV RMS within theThe Guardian 86 is a high end protection circuit designed to protect speakers against two common ways that power amplifiers can misbehave: Sharp voltage transients on power up and power down, resulting in annoying clicks and pops in the speakers. Excessive DC voltage on the output of the amplifier, for example resulting from amplifier failure or from unruly signal sources. The Guardian 86 is suitable for use both with single ended output and bridged