The B Stereo Input can be configured either for Line or Phono sources, depending on the jumper options set on the
input (rear) board.
Phono configuration is suitable for record-players, as a RIAA equalization is featured. NOTE connection is possible
only in unbalanced mode.
Line configuration is suitable for 0 dB level signals (f.i., coming from tape player, tuners, Cd players, etc).