Two weeks in and counting for the R300. Honestly, I enjoy the sound beyond my expectations for an amp at this price point. I ran it as an integrated for 5-6 days to get my Forte IV's dialed in and to get a sense of space. The music was alive and palpable. So far the amp seems to be a great match for the speakers. I inserted my Primaluna Dialogue Premium pre and ran the R300 as a power amp. This was not a subtle change and it took a bit to understand what I was hearing. The sense of realism increased. The spaciousness increased. I wanted to warm the voices and boy, did that do it. The sound is not fatiguing. I feel that I am hearing the music as the musicians wanted it heard. The bass is tight, real, and not boomy. The mids are - well, I'm running Klipsch Heritage speakers. I'm not hearing the brightness I heard with the KR Antares (albeit with different speakers). Right now I am running all stock tubes with the exception of a pair of Mullards in the pre. I have some tube rolling ahead of me but I could live with what I have now for a while without regret. This has been a promising purchase so far. I hope those of you who bought the amp are enjoying it as much as I am.
