The Morch DP-6 is a dual bearing design, while the UP-4 is a unipivot. The DP-6 has a ball bearing damped with silicon in the horizontal. It uses two sapphire bearings in the vertical. Damping in both planes is separate. Vertical can be adjusted. One of the sapphire bearings is used to provide azimuth adjustment.
I agree with Greg that $800 for a good used Morch DP-6 is good money spent. I have found the Morch arms very fluid and accurate. I heard the DP-6 as nearly straight neutral and the UP-4 as just a hair on the warm side of neutral.
Personally, I think that the Morch is a better sounding arm than the Silver with the midrage a little more forward inthe presentation, but that may well differ depending on table and cartridge, I'm sure. And, I've never heard one with the now famous HiFi mod. The Silver has less "adjustments" and is, therefore, easier to set and forget. The Morch is a bit more work and likely no the arm for someone fearful of "working with" their tomearm
I agree with Greg that $800 for a good used Morch DP-6 is good money spent. I have found the Morch arms very fluid and accurate. I heard the DP-6 as nearly straight neutral and the UP-4 as just a hair on the warm side of neutral.
Personally, I think that the Morch is a better sounding arm than the Silver with the midrage a little more forward inthe presentation, but that may well differ depending on table and cartridge, I'm sure. And, I've never heard one with the now famous HiFi mod. The Silver has less "adjustments" and is, therefore, easier to set and forget. The Morch is a bit more work and likely no the arm for someone fearful of "working with" their tomearm