Does a power-line conditioner suppress high-frequency noise?
Most power-line conditioners by their very nature will likely suppress high-frequency noise with a simple capacitor. The series line resistance, perhaps only fractions of an ohm, coupled with a shunt capacitor to ground, create a simple RC network known as a first-order low-pass filter. High-frequency suppression will fall at -6dB per octave. This means that the amplitude is halved each time the frequency is doubled. This is all that some conditioners are capable of doing. This is not necessarily bad, but by cascading several stages, a power-line conditioner can present a substantial amount of high-frequency noise attenuation. The Synergistic Power Line Conditioner incorporates a unique, multi-stage suppression system that attenuates high-frequency noise at the rate of -30dB per octave. This translates into a change in magnitude of over 30:1 as compared to 2:1 for the -6dB per octave filter. (See Specifications, or Technical Overview in the Online Manual for more detailed information.
