@car123 Same with me, tried async a couple times early on. The difference easily heard within seconds/minutes, smaller sound stage, less spaciousness, this to the point I've never bothered to explore further.
@brbrock Noticed thread you started where you mentioned 006 might be too fatiguing. Where did you get this impression? I can't imagine a highly resolving dac being less analytical, more forgiving. @dbb had issues early on, don't know where he's at with 006 today. Don't recall seeing a single review anywhere on interweb stating 006 fatiguing. Some may project certain sound qualities on Sabre chip dacs, implementation is key. I did same projection on R2R prior to my Laiv Harmony, lower resolution, laid back, no excitement, this not true.