Gain at 1kHz: 81dB of gain at 1kHz, balanced-in to balanced-out in Microphone Input Mode
Noise figure, rms A-weighted: < 2dB
Noise figure, rms unweighted: < 3dB, 20 kHz LPF bandwidth
EIN: < -130 dBu A-weighted, 150 Ohm resistive source
Frequency response: -3dB < 1Hz and > 100 kHz
THD: < 0.02% at 1 kHz
Input impedance: 10K Ohms
Balanced Line Input Impedance: 20K Ohms
Input Gain control: Twelve-position
switch provides from +13dB to +62dB of gain for the preamplifier
circuit, as measured between the input and the before the output line
driver.
Switched LF Shelving filter: -3dB break-frequency tunable from 18 Hz to 360 Hz; maximum reduction -20dB.
Switched CurveShape EQ: +3dB
break-frequency tunable from 2.5 kHz to 30 kHz; HF gain adjustable from
+0 dB to +18 dB; the slope of the HF filter varies interactively and
directly with the CurveShaper™ frequency and gain settings
Color LEDs: Green, Yellow, Red
XLR output maximum level into 600Ω load: +28 dBu, balanced; 0 dBu = 0.7746 V rms
XLR connectors polarity: Pin-1 is ground, pin-2 is high, pin-3 is low
LED signal level indicators:
The
green LED snaps on at -20 dBu to indicate the presence of signal; the
yellow LED snaps on at 0 dBu; the red LED snaps on at +24 dBu to warn of
approaching signal overload.
External Features:
- Laser engraved front panel markings
- Grayhill series 71 stepped gain switch
Internal Operating Voltage: Bipolar 17V