- When using the following connection while using the amplifier connected to the AK380

  It is adjusted to the basic volume level of the amplifier for protection of Earphone / Headphone / Ear 

Connection as below:

1. Activation of Amplifier

2. Change of High Gain / Low Gain

3. When removing earphones / headphones connected to the amplifier

* The basic volume of the amplifier is 50. 

  When the volume is over 50, if you do above three actions, volume will be adjusted automatically. 

  When deactivate the amplifier, regardless of volume level, 

  it maintains the existing volumes when the earphone / headphone is connected to amplifier.