I am looking for 4 pieces (or, at the very least 2 pieces) of above chip. Genuine article, obviously. Since there seem to be many fakes flying around, please let me know where you got them from.
Maybe you can buy LME49720HABD evaluation boards and desolder them - assuming that the LME49720HABD evaluation board indeed uses the LME49720HA (which would seem logical, but doesn't match the photo on the TI site).