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Originally Posted by Fuelled The premier ones have 6.5 volt outputs n the normal ones have 2.5volt outputs(btw the high end models like 8650 have 6.5v)
The more the output the easier it is to drive the amps(without distortion). |
I beleive sony and pioneer r making HU with preamp voltage >4 recently but alpine [2005 range] had only one model i.e.9855,with preamp voltage 4v.All other models have just 2v preamp volt.Even 2006 models have just 2v preamp voltage.
And general view is that alpines still sound best.
Techinally and logically all HU with with higher pre amp vol should sound better than with low volt output but i think its more dependent on choosing right material to make HU.
So acc. to make one sony/pio/other HU model with higher preamp volt may sound better than other models from same manufacturer with lower volt but not necessarily better than other manufacturer with lower volt.