Is there any danger in leaving a class D amp on unattended for ten days?

Solid state amps,  and especially digital converters much better when left on .
Class A amps shut off they suck up power.  When runnjng in gear,I have s Vacuum tube preamp and sometimes left on playing music for 2weeks straight. I have even left  Vacuum tube amps on for several days before. But not as comfortable as with a SS amp. 

I have all my gear on UPS protected circuits and running / air conditioned in a rack 24/7. Heat is the enemy. I had a shunt trip breaker installed and if there’s smoke or if the AC fails it cuts power.

The only time mine are off is during a power outage. 

I unplug my system when leaving for weeks...and I do believe it sounds better when left on...

My system is on all the time. Like markalarsen, the only time the system is off is if the power goes out.