Review on DAC transistor iFi Audio ZEN DAC V2 by Agata Kulesza ᠌

I took Beyerdynamic DT 770 PRO 250 Ohm for ears. With the PowerMatch option, it pumps well. Long picked up the level of gain. Comfortable listening level with the volume knob for 1-2 hours. approximately. At 3 o'clock loud. At the maximum, it's very loud. I wouldn't do it any louder. But not to the point of pain. The calculator on the manufacturer's website claims a pressure level of 106 dB. There is also such a nuance that the ears get used to the headphones for about half an hour. Therefore, at first it seems that it sounds quiet and the preamp does not pump, but after a while everything becomes the norm.