You cannot use an SS amp as a preamp. An amp is an amp, a preamp is a preamp. The preamp goes into the amp, not vice-versa.
"Maximum power" ? what does that mean?
Yes, all hi-fidelity gear will be damaged with the volume all the way up, if wired correctly, but what you are suggesting will destroy it instantly.
Please learn the basics of signal source, signal pre-amplification, and signal amplification. There is much info available about the...