"The patented K2 thing that is so famous is not actually a DAC itself, it is a digital filter with some (I guess) additional fifo buffer for reclocking (anti-jitter measures). The chip itself - The DAC - is not documented anywhere on the NET. Don't bother looking. It must be a genuine JVC chip or a Sony or Sanyo or NPC or something like that."
...и в музыкальных центрах эта фишка была отключаемой, мп3 звучали с ней прикольней, да и в ресиверы, становиться уже понятно почему её ставили....