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First things first. MOSFET does NOT dictate the type of power supply is being used. Metal Oxide Semiconductor Field Effective Transistor is an amplifier design type device, compared to a Bipolar Junction Transistor device type.

All headunits now use MOSFETs, a BIG marketing scheme to get consumers believe it's a better end product, capable of claiming to produce a ridculous 60W/channel on a headunit. Right...

You won't find a difference between the Pioneers 4500 or 4600, I guarantee it. Remember, larger numbers indicate larger output, so always market something with larger numbers.

Installation should be easy.
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