TDA7293 alien use

Always buy from an authorized distributor. Mouser, Digikey, Newark, Farnell, RS Components, etc. Buying from ePay or AliBlahBlah is just asking for trouble.

I would use fewer stitching vias between ground layers than shown in Post #7. You're not dealing with 60 GHz here. Each hole takes away quite a bit of copper, so you actually end up with a higher ground impedance than you would with fewer vias.

Tom