When you have infinite current capacity
Just the way I like it
That reminds me, wasn't there a NC502MP amp review recently and that was also a bridged amp with infinite* current capacity
*Not actually infinite, but for dramatic effect
Which reminds me, this Topping is a class AB amp. Let's say it is 50% efficient @ 80% power... so that's 70W * 2 * 80% = 112W to dissipate... That's... actually quite okay with the transistors mounted right onto the chonky heatsinks that are sitting right outside. Each one should handle 50W like a piece of cake if sitting in open air.