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| THD (Total Harmonic Distortion) is a spec that often shows
up with the power output spec. An example would be "45wattsx2 @ 0.01% THD"
This spec says that at an output level of 45watts into each channel the THD
will be no more than 0.01%.
Sometimes manufacturers will quote the power spec at a THD of 1%. Be wary of this, 1% THD is poor and either implies that the amp is not very high quality or that the manufacturer is artificially inflating the power output spec by running the amp into a higher distortion region where it does produce more power but more distortion as well. Either way it is a sign of a poor amplifier or marketing that decieves. Anything less than 0.1% is negligible. |
