I've built from 1998 many amplifiers with TDA7294 in standard configuration or in bridge mode and all this amps works very well.
( no single failure in all this time). No thump on start , no noise, 100Khz power band , very clean sound and very small THD for 2w to 50W rms.
Now I build a multi-channel amps based to TDA7294, ( 5 channel x 150w /8ohms) and I will post a picture in this forum soon .
If you want to build an amp as a beginer I think you will not regret .