Dear @kevemaher : Well, I’m not against your choices but only trying to help with a different points of view.
This is the DD20 that’s " almost " the same DD40 where bothare true entrey level by any standard in the DD MS models of that time where the top of the line was the DQX 1000, the DDX 1000 was inferior to the DQX:
https://www.vinylengine.com/library/micro-seiki/dd-20.shtml
I’m not saying that you are wrong, no one can do it, because that’s what you like.
Now, you own the 57L by Denon and if you use the DD40 over the 57L then for you the DD40 is better than the Denon. Which " characteristic/problem " mades that you prefer the MS over the 57L?
Today TT are not exactly high price ones if you know what to look for:
https://us.technics.com/products/grand-class-direct-drive-turntable-system-sl-1210gr
If you want or needs references of vintage products specs the vintage knob it’s very good site with some comments to take in count. No it’s not a reviewer site but along VE gives you a " entry level " information for those products.
Well and only for me. What you measured on FR with the PS/SUT is really bad because MUSIC in a home system belongs to the bass range. Ok, I know that the Nova RIAA eq. is +,- 0.25 db on deviation but the whole FR of that products combination in the bass range is a " little " inferior and it’s that quality level of what you are accustom too. Maybe you need to listen several other systems with better whole quality performance levels and you must do becaus e if not then: how will you know that your new cartridge really performs in the big league?
R.