Hey John, No it's not so hard to beleive, some people (like me) are very loyal to the equipment they share a past with. Yet, I miss the sound from CD player (which died few years back). :) " Even without USB isolation (the ISO devices), my experience is that well implemented USB sounds better than a well implemented SPDIF connection. " I was just about to order the ISO-SPDIF, and now this got me worried. :) I own an oldie but goldie Yamaha (http://www.hifi-review.com/153478-yamaha-dsp-a3090.html) surround amplifier, and in terms of digital inputs, all I have is Toslink and S/PDIF. My goal is to listen to music in "front speakers only", so stereo mode, and enjoy the movie surround sound via Doly Digital (AC-3). Source of my media files is an Android box running Android v7, with USB DAC support. I'm currently feeding the music directly to analogue RCA inputs via a Wolfson DAC (Bluetooth), and this sounds pretty nice, especially compared to the sound that I get if I feed FLAC via Toslink to the very same amplifier. So, to some degree, I'm aware of what the Yamaha is capable of delivering, yet, I get no satisfaction from Toslink inputted music. I was hoping to go to the next level with your ISO-SPDIF invention, feeding FLAC (and AC-3) from Android to Yamaha. Am I on the right track? Feel free to express yourself, no need for being political. *grin* Thanks!