To answer to this question, we should first talk briefly about efficiency. Our horn-loaded speakers are extremely efficient, meaning you will get more output for the input you put into them, with less distortion.
For example, Klipsch speakers rated at 100 dB sensitivity will take 1 watt input and hit 100 db output 1 meter from the front of the speaker. Each 3db more sensitive one speaker over the other gives you the equivalent of doubling the amp power.
With highly efficient speakers, you do not want to put 1000 watts into them, even peaks. If you do the math yourself (each doubling of power in gives you 3Db more output) and 1 watt into 100 dB sensitive speakers gives you 100dB’s out, 2 watts gives 103dB’s, 4 gives 106dB’s, 8 watts 109dB’s etc. etc., 1000 watts would (if it did not fry the speaker) give you dB levels that would almost instantly blow your ear drums.
A “high” power amp like that is designed for much less efficient speakers (for example 88/ 89dB sensitivity or less), although, again, at that type of output, even for just instant peaks, it will probably fry any “home audio” speaker. If you enjoy really “loud” (and clean and lifelike) sound, we suggest our Klipsch Reference Series RF-7 II speakers. They are rated at 250 continuous/1000 peak, but, again, you will never put that much into them unless you want to blow yourself through the wall behind your main seating position.