User manual
Page 16
USING THE BALANCED OUTPUT
The GCS-3 has both single-ended ΒΌ-inch phone jack and balanced XLR outputs, and
both work at the same time. For most sound systems, the balanced output is preferred
because it avoids common audio problems such as ground loops, signal bleed and
degradation. The GROUND LIFT switch, which is located on the back panel, is used to
isolate the signal ground of your equipment coming into the GCS-3 from the signal fed
to the console. This avoids line frequency hum in your audio signal. The XLR
balanced output is at line level only.
SPECIFICATIONS
INPUT IMPEDANCE: 540k Ohms
OUTPUT IMPEDANCE: 200 Ohms
Nominally Unity Gain
HEADPHONE OUTPUT: 32 to 600 Ohms
External Power Supply: 9VDC
Internal Power Supply +/- 9VDC (18V)