[andrew@gardiner ~]$ cat /etc/asound.conf
ctl.equal {
 type equal;
}

pcm.plugequal {
  type equal;
  # Modify the line below if you don't
  # want to use sound card 0.
  #slave.pcm "plughw:0,0";
  #by default we want to play from more sources at time:
  slave.pcm "plug:dmix";
}

#pcm.equal {
  # Or if you want the equalizer to be your
  # default soundcard uncomment the following
  # line and comment the above line.
pcm.!default {
  type plug;
  slave.pcm plugequal;
}