A while back I was working on designing a hybrid amp with a tube preamp and SS power amp. I'm finally getting around to finding components for it, and it is my understanding that the TDA2050 is no longer commercially available. I guess my first question is is there In fact no more legitimate source for this part? If not, does anyone know where I could get (preferably) a kit for a power amp IC? My circuit has one 35VDC rail, and I've only been able to find kits for dual-supply operation. I just want it to make a small signal bigger, so I'm not too picky; any run-of-the-mill, standard, boring IC will do just fine. Thanks for any suggestions!