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In addition to the main ±12 V output
The gain is changed by moving two jumpers on the PCB
300 Ω || 220 pF load Total Integrated Noise and Residual Mains Hum 1
including safety clearances
XLR) input on the Modulus-686
Guardian-86 Connectors & Parts In addition to the mainThe 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