Excellent product to connect a Freebox Revolution to a coaxial digital input or Demuni audio amp. Do not forget of course to buy 1 or SPDIF cable Toskink (the same thing) -5 enough to find one well in Amazon- to handle input-output converter to freebox and 1 RCA cable (red and white) to Sign converter output amp input (1 or 2 max ...) Voila! for less than 40 ....