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<blockquote data-quote="helotaxi" data-source="post: 1841186" data-attributes="member: 550915">I don&#039;t know of one that won&#039;t.&nbsp; Most only require 250mV to make full power at max gain.&nbsp; In fact most amps will clip to hell and back if given a 6V input signal regardless of gain setting, you will simply overdrive the amp.&nbsp; I&#039;m not talking DC power from the battery here.&nbsp; The discussion is about input sensitivity.Actually variable input level is the ability to adjust the input stage of the amp to accomodate a range of source unit input voltages.&nbsp; As I said, you won&#039;t get 8V from a HU with 8V preouts when playing music.&nbsp; 4V maybe, 2.5 is more likely.&nbsp; As such pretty much any amp will be able to handle it fine.&nbsp; Match the input sensitivity to the actual voltage level put out with the source material in question and you&#039;re golden.&nbsp; If you are playing test tones and your HU can produce more voltage than your amp can handle at min gain ithout clipping, there is a simple solution to that as well.&nbsp; You can dial down the output voltage with this little thing called the volume knob.&nbsp; Whenever you turn the volume know down, the voltage signal from the source unit decreases.</blockquote>

[QUOTE="helotaxi, post: 1841186, member: 550915"] I don't know of one that won't. Most only require 250mV to make full power at max gain. In fact most amps will clip to hell and back if given a 6V input signal regardless of gain setting, you will simply overdrive the amp. I'm not talking DC power from the battery here. The discussion is about input sensitivity. Actually variable input level is the ability to adjust the input stage of the amp to accomodate a range of source unit input voltages. As I said, you won't get 8V from a HU with 8V preouts when playing music. 4V maybe, 2.5 is more likely. As such pretty much any amp will be able to handle it fine. Match the input sensitivity to the actual voltage level put out with the source material in question and you're golden. If you are playing test tones and your HU can produce more voltage than your amp can handle at min gain ithout clipping, there is a simple solution to that as well. You can dial down the output voltage with this little thing called the volume knob. Whenever you turn the volume know down, the voltage signal from the source unit decreases. [/QUOTE]

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