Burning smell

Is it unusual for the capacitors to be blown after 6 years ? it looks like that may be the problem

I have homeowners insurance. They are unlikely to cover this

Check if these caps made in China, then you'll probably find answer.

There are also smaller caps that need to be checked around high-heat power supply area where you may see it either out of shape or draining liquid that potentially smokes. Heat damage usually visible

Homeowners insurance will compensate you if you continue to listen to music and burn your house :-)

good one

Czarivey as usual giving bad advice including insurance fraud.

Two most likely culprits are caps and resistors.  If it is a cap, it may just be leaking fluid onto a normally hot component.

A quick inspection by you (if you know how to open it up) or a tech should identify the hot component.  If not, then power it up with the top off and a thermal camera will identify the hot component immediately.  Should not be expensive fix.  

and if you can afford this amp, you don't need to commit insurance fraud.

Jerry