When I had a VPI TNT Mk. II, I found that the SDS controller/regenerator was essential to optimizing its sonics. I figured it would be equally essential with the Nantais Lenco that replaced it (replaced in turn by another 2-arm Lenco).
Turns out, the SDS didn't do a thing for the Lenco. Nothing. Zip. The Lenco sure beat the TNT in every way that's important to me, but I couldn't tell a bit of difference whether it was plugged into the SDS or directly into the wall. I'm not sure what that proves, and I certainly wouldn't second-guess Jean's ability to come up with a better PS, but I wouldn't expect it to be cheap.
Turns out, the SDS didn't do a thing for the Lenco. Nothing. Zip. The Lenco sure beat the TNT in every way that's important to me, but I couldn't tell a bit of difference whether it was plugged into the SDS or directly into the wall. I'm not sure what that proves, and I certainly wouldn't second-guess Jean's ability to come up with a better PS, but I wouldn't expect it to be cheap.