While the Geek Out 1000 will work with IEMs, it is not recommended as the power can overwhelm IEMs very easily if the volume is not adjusted carefully (potentially causing equipment damage and/or personal injury to hearing).

 

Please use the Geek Out 100 IEM or Geek Out 450 instead. Only use the Geek Out 1000 for larger high impedance/low sensitivity headphones.