I am not an owner, but, I have listened extensively to a friend's system that had the same combination. I think they produced very good sound for solid state back then, and I doubt much has changed since then (most "progress" is essentially marketing hype). If you like the sound, there really is no compelling reason to change.
My one recommendation is to consider changing the tubes in the phonestage, if you use the phonostage. I have heard dramatic improvement in phono reproduction when that was done. While what is best is largely subjective, I know two people with the HP-200 that ended up using Amperex Bugle Boy 12AX7s and they are very happy with the switch.
My one recommendation is to consider changing the tubes in the phonestage, if you use the phonostage. I have heard dramatic improvement in phono reproduction when that was done. While what is best is largely subjective, I know two people with the HP-200 that ended up using Amperex Bugle Boy 12AX7s and they are very happy with the switch.