public function isSpeaker()
{
$model = $this->getModel();
$models = ["S1" => "PLAY:1", "S3" => "PLAY:3", "S5" => "PLAY:5", "S6" => "PLAY:5", "S9" => "PLAYBAR", "ZP80" => "ZONEPLAYER", "ZP90" => "CONNECT", "ZP100" => "CONNECT:AMP", "ZP120" => "CONNECT:AMP"];
return in_array($model, array_keys($models), true);
}