Darkmoebius,
The problem was not with 7B SST input sensitivity or Wadia’s output (which I did not adjust BTW), and here is why.
I had another player available during this mini session, Esoteric DV50, which gives much higher voltage on output, problems with TVC were the same. Music was louder, but still dull, no dynamics, and with loss of transparency in comparison to Wadia direct (Esoteric of course could not go direct to amps since it has no its own volume control).
Also, TVC I had was balanced unit, so I used 2V setting on 7B SST which works well for balanced, it was balanced out of Wadia into TVC and balanced into 7B SST.
The problem was not with 7B SST input sensitivity or Wadia’s output (which I did not adjust BTW), and here is why.
I had another player available during this mini session, Esoteric DV50, which gives much higher voltage on output, problems with TVC were the same. Music was louder, but still dull, no dynamics, and with loss of transparency in comparison to Wadia direct (Esoteric of course could not go direct to amps since it has no its own volume control).
Also, TVC I had was balanced unit, so I used 2V setting on 7B SST which works well for balanced, it was balanced out of Wadia into TVC and balanced into 7B SST.