SPL Phonitor 2 Black, Preamp / Monitor Controller, Switchable level adjustment: Consumer to pro level 1: 1, +6 dB, +12 dB, Line signal pre-amplification and headphone signal amplification for three sources, Loudspeaker playback simulation on headphones, Laterality control corrects uneven L/R loudness perception, Remote control volume control via motorized potentiometer, For all headphone types: Dynamic, symmetrical, electrostatic, 120 V Technology, Analog VU meter, Loudspeaker / Headphone mute function, Integrated power supply, Desktop format, Dimensions: 325 x 275 x 92 mm@+*Connectors:*@+@+, 3x Stereo line input: Source 1 and 2 XLR L/R, source 3 RCA L/R, Stereo line output: XLR, Stereo headphone output