Amplifiers: IC selection and determining its correct values
For the very specific question there is a line in the datasheet with these values, specifying the bandwidth over which the measurement was made:


  Total Harmonic Distortion Plus Noise THD+N f = 1kHz, BW = 22Hz to
  22kHz, POUT = 22W
  0.09 %


Dave Tweed is also correct that you need to at least specify input, output and portability before you can even start looking in the right category.