Excellent amplifier. The only serious issue: it can frequently trip sensitive circuit breakers on start-up. The NC252MP specification declares an inrush current of up to 75A and there is probably nothing to prevent all the three modules to start at the same time. I solved the problem by plugging the amplifier through an inrush current limiter: https://www.conrad.com/en/p/h-tronic-1114730-switch-on-current-limiter-scl-3680-ip20-2588901.html