Seeing as the 860 is essentially two mono blocks in a single chassis, simpler is better in the less is more age. What speakers do you want to drive? 225 pc @ 8ohm is solid numbers with a double at 4. Considering the cost difference between 860 and 330, if you have the means, the 860 as stereo would be the better. Bridging is not often the better outcome.
Two 330A versus one 860A?
Any advantages or disadvantages of using two 33OA in mono mode versus just one 860A?
thank u!