It is much easier to blow a speaker with an underpowered amp than with an amp spec'd to at least rated speaker power handling, preferably more, or even much more especially if you like it loud. For example my speakers are rated 100 w/ch so I like around 200 w/ch amp with them. Right now I'm running 150 w/ch but that's not enough. Another amp I have is rated 350/ch but with rated 2dB headroom it pushes more like 550/ch before clipping. That one I have never heard distort & won't blow a speaker coil because I never run into clipping, which is what really kills your speakers. With a 250watt speaker, go for all the clean power that you can reasonably afford.
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