It's important to note that the rated power for all these Fosi amps is misleading. Normal power rating standards are supposed to be given as RMS, not peak, but clearly Fosi is going for peak/ideal/fluffed. In this case the power supply is 24V @ 4.5 amps, which means at 100% efficiency (which is impossible) the amp is capable of producing 108 watts total (simple volts x amps for watts). (An amp cannot send more power to the speakers than its power supply supplies.) At a typical 80% efficiency of a Class D, that's more like 86 watts, and of course it's 2-channel so that realistically means roughly 43 watts per channel.
That may still be enough for a lot of users, but I figured I'd point that out so that people knew not to be expecting 160W RMS x2, because that's never going to happen with this amp.
That may still be enough for a lot of users, but I figured I'd point that out so that people knew not to be expecting 160W RMS x2, because that's never going to happen with this amp.
