I, to, have heard that the TP-117 has the T-117 tuner in it. I wouldn't doubt that it does as it cost $1200 new and the tuner was $600. The R-117 receiver was only $1000. Based on pricing I would think the TP-117 has the T-117 tuner in it. I have the T-117 and once I receive the TP-117 I just purchased I will do some A/B listening. Hopefully, my ear will be able to tell if there are any differences. This should be an extremely easy A/B to do. Will simply get to switch back and forth between the TP-117 tuner and T-117 and see if there are any noticeable sonic differences.