I owned one and it is easy to use and sounded very good, although I did sell it after about two years and moved up to a Luxman EQ500. BTW - I also owned a Herron VTPH 2A and I thought that it sounded great on classical and jazz, but not so much on rock.
I purchased a new VTPH-2A from Keith directly and received it about 2 weeks ago. I’ve been using it all day every day since (I work from home and my listening room is my home office). I’m guessing I have about 160 hours on it now. I did not want to comment until I felt it was broken in.
In regard to using it with rock, I listen probably 60% to rock and blues, various genres. I find it excellent for rock.
Timing and pace is everything I want from my analog system, especially considering I’m using an average preamp for the line stage. It’s very dynamic, both macro and micro, and I’m definitely hearing great results. Also, my records somehow seem quieter, maybe it’s from a blacker background, but also I think I’m hearing less ticks and pops.
I’m going to be looking for a new preamp in the near future that I hope will bring out even more.
Maybe something in your system didn’t interact well with the Herron, or maybe it’s just personal taste. I’m thrilled with it so far with all genres.