LM4702 is another amplifier from National Overture series. Quote form LM4702 application note:
"The LM4702 is a high fidelity audio power amplifier driver designed for demanding consumer and pro-audio applications. Amplifier output power may be scaled by changing the supply voltage and number of output devices. The LM4702 is capable of delivering in excess of 300W (!) watt per channel single ended into an 8 ohm load in the presence of 10% high line headroom and 20% supply regulation."

Sounds nice... Is it really possible to get so many power form such easy application? We will see ;)

This is a project of my test board for this amplifier:

This is probably final PCB for this amplifier with MOSFET output stage. Only thing that left is protection circuit board.