A Class A PASS XS300 monoblock will dump 48A on demand. You need two of these. See where this is going?
This seems really unlikely!! Giving the amp the benefit of the doubt, and assuming it can double power into 2 Ohms, it would be making 1200 watts. If it can do that the current would be about 24 Amps. To do 48 Amps, the amp can would drive 1 Ohm with 2400 Watts (that would be 48 Amps of current) and I just don't think so. The math is against it.
You might want to read this:
http://www.atma-sphere.com/en/resources-common-power-amplifier-myths.html
Whomever you got your information from was misinformed, IMO.