Brothers only know how to change HU from original HU with the speakers wires unchange. This is their standard, anything more than that like adding an amp or others they sure fail.
When the amp go to protect means there is short circuit or the amp overheated. When this happens the amp will shutdown itself, after sometime it can be on back again.
Anyway you can do a quick check on Alpine HU on Sabah like Izso said. Look at their website, this year models all comes with mp3 but some still 1 pre-out. But don't compare Pioneer with Alpine for the price with mp3 and 3 pre-outs.
Pioneer only supply 2.2V for its pre-out, not like Alpine gives 4v. If lower supply voltage, the amp gain have to set more and this can cause airplane sound if the amp not earth properly. Anyway this is not a big problem.
When the amp go to protect means there is short circuit or the amp overheated. When this happens the amp will shutdown itself, after sometime it can be on back again.
Anyway you can do a quick check on Alpine HU on Sabah like Izso said. Look at their website, this year models all comes with mp3 but some still 1 pre-out. But don't compare Pioneer with Alpine for the price with mp3 and 3 pre-outs.
Pioneer only supply 2.2V for its pre-out, not like Alpine gives 4v. If lower supply voltage, the amp gain have to set more and this can cause airplane sound if the amp not earth properly. Anyway this is not a big problem.
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