Does it have a headphone amplifier?

There is no “headphone amplifier” in the Pro iDSD Studio, just a gain stage/line driver that is sufficiently powerful to drive many headphones directly. However, doing so is understandably not going to offer the same quality as using a dedicated headphone amplifier like our Pro iCAN Studio. It is adequate for anyone occasionally using headphones while mostly using a speaker based system. However, unlike the Pro iCAN Studio, it is not optimized for headphone drivers. It cannot drive as wide a range of headphones as the Pro iCAN Studio and it does not boast the sonic controls offered by the Pro iCAN Studio.