So won't be anything like the change I experienced from the outlaw to the parasound by making the bass louder and tighter because of the more power. Then it's weird the way paradigm list the specs on their website by saying maximum 200w but suitable amp range 15-400 watts. Well good news so far, since I have to buy two new subwoofers because when I bought the one, Dual subs weren't that popular and I can't see anywhere where there sells my sub since it's a older model
. So if it's not going to make any difference, that would save me money to further upgrade to go to dual subs.
You can't based on subjective views of others but you can rely more (relatively but not absolutely) on verifiable specifications. If the speakers is specified as suitable for 15-400 W amp but maximum input is only 200 W, then I think it probably can sustain an input of 200 W but can handle up to 400 W frequent peaks.
They don't specify whether the "W" is average W, or peak W. That again, typically means "peak" (so it looks higher) based on sine waves. Amplifier outputs are normally specified correctly in "average watts", or incorrectly in "RMS watts" that are often used to mean the same though actually different by definition. So an amp rated 100 W average means it is also rated 200 W peak. This is objective facts that you can trust.
It is also a fact that an amp that is rated 200 W average into 4 ohms will not make your speakers sound different than if that
same amp is rated 100 W average into 4 ohms, if your spl in your seat only requires 1 W average. Using this example, amps can of course sound different, but not because of their difference in power output.
I have the 250 W A21, but it does not make any difference for me in SQ, when compared with my other amps, even AVRs at level that requires less than 0.5 W average, but that's just me and I used to be "able to" hear difference between amps too, ymmv for sure..