The new headphone amplifier Germany works with headphones with an impedance range from 60 to 600 ohms. In addition, A2 has the ability to drive two sets of headphones at the same time. On the back we have two RCA inputs and one output, so we can pass the signal through. However, the most impressive thing is the notch on the cover, so you can see what is happening inside. Price - €1490. Photos by Beyerdynamic.