I just got a Dynavector DV20 and am running it through a Lehmann Black Cube SE with the new board that was introduced in 2006. The online manual here on VE does not cover that unit but I have it. I think it needs some editing for clarity but that's another matter. I can provide the book as a scanned PDF to someone who can put it up on the site.
Anyway, the DV wants a 3K load and by listening and flipping I'm thinking I need to get there based on how it sounds on either side of that position. One is too rolled off (the DV has a slight HF rolloff which is fine but too much isn't good) and the other direction is pretty untamed.
DIP switches on my unit ACCORDING TO THE MANUAL SHIPPED WITH IT provide for 100, 1000, and 47K loads. There are two hard wire spots on the board for additional loading.
1 is "immediate effect without having to activate an additional DIP switch. Capacitive or resistive load placed here will be connected in parallel to all other activated loads, at least parallel to the default 47K/100 pf"
The other slot is switch activated but functions like the above that is non-switched.
I can provide a schematic of the board if desired.