The upsampler does indeed take a very long time to break in.
I also have the Njoe Tjoeb, when I first installed the upsampler I was very upset with the sound. After a very long wait (about 200 hrs) it started to sound real good.
I also have the Njoe Tjoeb, when I first installed the upsampler I was very upset with the sound. After a very long wait (about 200 hrs) it started to sound real good.