The peak on an amplifier is when the voltage/current going through it is at it's physical peak so by adding more current to it's peak will do nothing expect distort the music and it may damage the amplifier.
Sorry going engineer on you now.
Think of it like this, Amplifiers work with an AC (Alternating current) and the peak voltage is literally the top of the electronic pulse which is all the amplifier can produce so you are at the redline where it simply can't do any more and by doing so will damage the speakers. Don't bother getting a new amplifier because even if you get one the speakers may not take that sort of current it's producing.