provides turntable ground connection to eliminate hum.
gently rolls off bass to reduce rumble and resonate feedback at high play back volume.
light when phantom-power is present or when the PSU is connected.
-10dB line level hi-Z outs connect to hi-fi systems.
equipped with RIAA preamp connects to turntables.
Balanced 600Ω active drivers can drive signals over 100 meters (328 feet)
15VDC supply connects here when phantom-power is not available.