Connection type: 6.3mm jack/ 3-pin XLR connection
Frequency range: 5Hz to 40kHz
Impedance: 250 Ohm/ Requires amplifier
Material: aluminum and plastic
Other features: two set of ear pads for different sounds
German handmade headphones are among the market professionals. And it’s suitable for studios, mixing and mastering. This model is actually an open version of the Beyerdynamic DT 1770 Pro headphones, but the 1990 model gives you a sense of natural and spacious outdoor sound due to the open back. Beyerdynamic connects the two pads of the phone with these headphones, which makes it possible to play two modes of balanced sound or special sound adjustment. Some experts believe that the Beyerdynamic DT 1990 Pro emits intermediate-frequency sounds a little weaker, but overall the quality is excellent. The Sennheiser HD 600 and HD 650 headphones are close to the 1990 Pro model, but are hard to find on the market.