I just downloaded J River Media Center 18 for the 30 day trial. Has anyone switched over to JRiver MC 18 on a Mac based system. I just started the free trial ,so it is too early to make any comments yet.
I have but like you, just downloaded this week. I paid for mine since they offer license for the upcoming Mac version 19 which offers even better performance with improved memory play. I'm aware of this only because a beta tester for J River is a friend and keeps me informed.
I had Amarra and Channel D and to me the JRiver is more dynamic but I am not thrilled with the high frequencies. That being said, I'm using the lowly Oppo BDP-105 USB input so it serves as the primary DAC.
The same CD on the Oppo sounds better than ripped track played back via my Mac Mini. I've got several interface cables including those that came with my Oyen Digital plus Purist and Audioquest Diamond. The FireWire 800 cable from Audioquest is excellent and at this time the only aftermarket (audiophile) option I have for FireWire. For USB I have generic, a couple from Purist and the Audioquest Diamond.
Regardless of which I choose the tonal balance is unpleasant compared to spinning the CD. My files are Flac, ripped with no compression and include HD Tracks and other high quality sources as well.
I want this to work and hope a better DAC plus upcoming JRiver 19 bring this up to where I'm excited about the sound. Too much material on digital (only) to not have a way to listen and enjoy.