Update on OP: The Monoprice 8127 arrived today, described as an "Analog to Digital Coaxial and Digital Optical Audio Converter." I routed analog from the fixed RCA output jacks on the back of the Pioneer TX-9500II to the Monoprice RCA inputs, then ran a digital coax to the Benchmark DAC1. From there, the analog RCA outputs of the Benchmark go straight to my Sony amp. I also connected the Pioneer TX-9500II analog variable outputs straight into the Sony amp to compare SQ (that is actually how I have regularly connected the tuner to the amp). Switching between inputs on the amp provides a means of subjective comparison, but that process is hindered by a change in volume between the two signals. Somewhat surprising to me is the the fixed output signal from the TX tuner, once it is processed by the Benchmark, is noticeably louder than any of the other signals processed by the Benchmark (CD, Airport Express and USB from my MBP). I realize the Monoprice may be the culprit here and I can almost correct for the discrepancy by increasing the volume on the "Output Level" knob on the front the tuner. Anyway, after a brief number of trials listening to classical and jazz FM broadcasts (and making volume adjustments between the listening tests) the FM signal digitized by the Benchmark has more pronounced base. It is subtle but noticeable. And overall it is pleasant to listen to. There are other qualities I hesitate to qualify until I have done more listening, which I will do in the coming days. So I may have different impressions a week from now. Stay tuned...