Measurements of Beyerdynamic DT 990 600 ohm were carried out by Roman Kuznetsov on the hardware-software complex RAA.
The Beyerdynamic DT 990 600 ohm test was conducted as a black box test, without regard to cost and prestige. This is the basic principle for making measurements, measurement reports and developing tests in RAA.
Kuznetsov Roman Founder of RAA
Known by the nickname romanrex Аuthor of articles iXBT.com