Acquired beyerdynamic DT 990 PRO Over-Ear Studio Monitor Headphones – Open-Back Stereo Construction, Wired (80 Ohm, Black (Limited Edition)). These will be immensely useful in film production and film scoring as film music is composed using extremely low frequencies to generate film music that creates a feeling of dread in the listener, perfect for horror film production. They have a frequency range of 5 to 35,000 Hz.