My measurement at 1W is here:Not only you (see below), btw would you show YOUR and not the datasheet plot?
Not difficult to get it at 1W, but to keep it at high power. And how about low noise? You get it with TPA? I do not think so.
View attachment 168642
And at 10w it exceeds the spec by TI’s own reference design with PFFB:
My noise floor is about -125dB. As I said, the TPA32XX is extremely high performing with factory suggested settings. Better layout and components and tweaking the PFFB can improve performance gains. This is for 51v PSU and PFFB as suggested by TI. My load is 10ohms as I did not have an 8ohm low noise sunny resistor handy. More on this amp is discussed at DIYA here.
Last edited: