Early advertisements for the 4004 stated it was stable into a dead short. That may be a bit of exaggeration, but a 4004 will laugh at 3-ohm nominal loads.
There is ONE caveat: Will the wiring from your circuit breaker panel to the wall socket withstand the 1500-watt maximum load without voltage drop? If you run that amp HARD on a typical 15-amp circuit--and that circuit is also supplying other electrical loads--you'll "brown out" or even pop the breaker. When the voltage sags; nobody is happy.
When I set up my room, I supplied a dedicated circuit for each amp (2-4004; 2-8008BB) and two more circuits for the rest of the equipment. Each circuit is 10-gauge wire instead of the more common 12-gauge. Older houses may have 14 gauge. (Larger number = smaller wire.)
A Palladium is rated at 1000 watts into a 2-ohm load. I'd say it can stray from 8-ohm speakers and be just fine.