If it's good info for you, your purchase comes with a 30 day return policy. If this cable doesn't work for you...send your system to us within 30 days and keep the I/C for free! Na...we'll refund your purchase price. If this instills further confidence in us I think it's good to point out that of our YTD sales figures, we've had 2.1% percent returns. That's out of about 187 projects (not individual cables). We're very proud of that and I don't mind shamelessly bragging a bit. That's way beyond my expectations!
While I don't have personal experience with your Sony I can tell you that the Poiema!! Digital Master should allow you to appreciate the virtues you enjoy about the Sony. I didn't design the cable to perform as a tuning device. On the other hand, if you're looking to tune your system a bit, the Poeima!! cable may be kind of a crap shoot. Either way, I think it's hard to loose giving it an audition.
Other difgital cables the Master has replaced in other systems include some of the ones you mention. Give the Master a try. I'm betting you'll be glad you did.