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is it good to have less or more of it? and also why do most companies only post THD of 4 ohms, does it change with each load?

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THD is total harmonic distortion. The more THD the worse the quality of the output signal will be. Companies will tell you the THD at their rated loads as it changes. Lower loads typically have higher THD, but it really depends on the design. The number they post is only accurate for the rated load.

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Do realize at the same time there is no controlled definition so it is a rather easy specification to manipulate.

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Also keep in mind while a lower number is technically better from a measurement standpoint, it does not mean you will actually hear a difference. Most amps are rated at 1%, but assuming the same measurement method is used having a lower rated THD won't sound any better. Also THD is just the distortion at rated power, the amp will produce more distortion at higher power levels.

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what they said. Go read up on home audio forums on this its a crazy subject,

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oh really? so most likely there won't be a difference in sound quality?

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oh really? so most likely there won't be a difference in sound quality?

Unless the amp is broken or a terribly cheap lowest of the low end design....no.

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haha oh alright. thanks this explained all I had to know

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