signal to noise ratio

[danstow1 0]

will you notice any deferents between a deck with a 95 db signal to noise ratio or a deck with a 105 db. With 2 volt out puts and also the same ? with 4 v out

[slim2fattycake 85]

No.

[///M5 2,833]

No way, no how to either question.

Think about how loud your car is. As long as your noise floor is below that you have nothing to worry about. Having a dynamic range of 100dB is way overkill in mobile applications.

As for the 2v vs 4v the only difference will be that you will have your amplifier gain turned a teeny bit higher to compensate. If you have a deck that you can hear the acoustic difference in each step of the volume knob then on a 4v deck you will be only outputting two volts one step down from max volume (max no clip level). If you can't hear the difference it could be a couple steps or if your ears are stellar. Again either way it is easily compensated with the gain knob on your amplifier (and in fact why your amplifier has a gain knob).