For more info about output power you can read TAS5624 datasheet.
On figure 1 you can see about 2x70W 8Ohm and 2x115W 4Ohm with 36V supply voltage and 0.1% THD+N.
Reading figure 2 and 4 could be estimated about 2x55W 8Ohm and 2x90W 4Ohm with 32V supply voltage and 0.1% THD+N.
You also have to...
