Preamp output voltages

[Southpaw088 10+ year member]

What are the advantages or differences to having higher preamp voltage for example 2 volt vs 4 volt ect on head units ?

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[Blasphemy 10+ year member]

The gain doesn't have to be as high. And from what I understand you have less of a chance to get engine noise with higher preamp.

 

[AudioDave]

Its the difference of night and day. Heres a link

Preamp Output Voltage

 

[Southpaw088 10+ year member]

Thanks guys