Say you've got one of those wizz bang Eclipse HU's with 10V (or whatever it is) pre-outs.. say you also own an amp with a max RCA input of 4V. What happens when you hook them together ?

If the input signal from a "normal voltage" RCA is over-driven by increasing the gain sensitivity too high it clips. To cure this, you turn the gains down.

What happens when the amp recieves this huge singal from the huge output HU ? Sure you can turn the gains down to MIN, but even at that setting the signal would be over driving the amp into clipping. Wouldnt it ?

I've always been curious about this.

previously i followed the advice from david navone when setting the output voltage on my rca converter
he recommended a 3:1 voltage overlap
so i had 3v sensitive amp, so the rca's were set to 9v and the gains set to virtually 0
worked great, never had a problem with it, now im on 4v pre-outs on the new deck its never really sounded the same.. gains are set alot higher and im not so happy with it anymore its a bit weaker mid bass and sub bass arent as strong as i was used to, so will get a line driver soon to bump it back up to 9v to give me the same 3:1 overlap

I would recommend doing a search, Cyberpunky and other knowledgeable people have answered this one in detail before.

To use the full voltage of this HU you would need to have an amp with Balanced inputs (kinda thin on the ground these days). If using more common unbalanced signal I think the unit only puts out 8 volts(did I say only ).

This wont be a problem with most music (be careful of sine waves) and with even a 4 volt input amp would only be 2:1 overlap.

Anyway as long as its just music you listen too and you are careful with volume control it shouldnt be an issue
peace
Cyberpunky