I still own an original D1 that has been modified. I've always liked this DAC in stock and modified form. If you like the NOS sound and TDA-1543 chips then unless something else is wrong with the DAC you're probably going sideways with your move.
However, the Valab NOS DAC mentioned in the forums here looks very promising. I might just try one out for myself. For $200 it worth a shot.
However, the Valab NOS DAC mentioned in the forums here looks very promising. I might just try one out for myself. For $200 it worth a shot.