This is all I could find from a foreign website hope it helps.
RMS( 12.0 V, 20hz-20khz )
30 W x 4 ( 4 ohm stereo, 0,04% )
40 W x 4 ( 2 ohm stereo, 03% THD )
80 W x 2 ( siltakytkettynä 4 ohm, 0,3% THD )
RMS( 14.4V, 20hz-20khz ) )
50 W x 4 ( 4 ohm stereo, 0,04% )
60 W x 4 ( 2 ohm stereo...