How important is 4V vs. 2 V outputs?


Bronze Member
Username: Bnh142

Post Number: 49
Registered: Nov-04
I love the new Alpine CDA 9851 51

but it has one disadvantage compared to most Alpine HU's: a 2 volt output instead of a 4 volt. Is this a big deal?

Silver Member
Username: Rzarector

Coquitlam, Bc Canada

Post Number: 199
Registered: Dec-04
when running an amp to your HU a 4 volt preout will be better than a 2 volt .. a 4 volt sends a better signal to your amp which will give you better SQ

Bronze Member
Username: Bnh142

Post Number: 50
Registered: Nov-04
I thought that a higher voltage only raised the signal above any interference (making it less audiable) that might leak into signal as it travels back to the amp. Wouldn't sound quality be otherwise unaffected?
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