Basically the title. I never had and amp in my life, Fidelio X3 are my first “good” phones. I wanted to know if I should buy that DAC, or other or none. Also, what am I expected to happen? Just louder music? Or some corrections (I say it and it sounds stupid because in no way it can understand what the headphones are like)? It is a portable DAC means that if using in a phone, it drains the battery a bit faster right? Same for a laptop I suppose, but if plugged in it has no impact. Also, how does it deliver the power? Is there a way to control it? Or automatic? I read about the rule of eigh, but it doesn’t show anything to regulate.
That’s what I don’t understand, does it mean the phone buttons, or the laptop slider? If so, I have no control on what the DAC does, it is just a static amplifier, or is it linear - the higher I set the volume in my phone, the more the amplifier will boost (Making it almost increasing by factor of 2 for each level I increase the sound)