I've met audiophiles who think all digital-to-analog converters sound the same. "If there's a difference," they declare, "it's in the filters or output stage." Some even believe that the whole "digital thing" was solved before we entered the 21st century. Not I.
By 2005, I'd begun to think the whole digital thing would never be solved. Worse yet, I'd stopped caring. "Mechanical Sound Forever" was the song I sang. Then an old friend gave me an inexpensive D/A converter, a Halide Design DAC HD ($495, discontinued). I…