High capacitance speaker cables can cause some SS amps to oscilate. This can cause them to heat up or even blow.
Look for speaker cables with a capacitance of around 35pf/meter or less.
Van den Hul d352 is one such cable as well as NAIM NAC A5 (the lowest I've heard of) and KLE Innovations gZero2 or gZero6 to name but a few.
NAIM amps (which I have) can also suffer oscillation - that's how I heard about it
Hope this helps