09-30-2021, 04:51 PM
Hi Paul, You will not be disappointed if you keep that RCA. It's a model 6RF9,9 tube, transformer powered powerhouse. I own 4 of them along with its earlier models, 1R81 and 3RF91. In my opinion the best American made tabletops ever made. The schematic is listed with the 3RF91. Good luck ,Bill