Gain:
(s/n 0503_ or greater), Mic Input to Output, per channel, continuously variable

Equivalent Input Noise:
-126 dBu (-128 dBV) maximum (150 ohm source, flat weighting, 22 - 22 kHz bandwidth, gain control set at 50% or higher, phantom power off)

Output Clipping Level (Line):
+22 dBu minimum with 100k ohm load, +20 dBu minimum with 600 ohm load

Dynamic Range:
110 dB minimum

THD + Noise:
0.05% maximum (from 60 Hz to 22 kHz @ +4 dBu output level, 22 Hz - 22 kHz filter bandwidth, gain control at 50%, phantom off)

Inputs:
Transformer-balanced, 2k ohm input impedance

Outputs (XLR):
s/n < 0507 - impedance-balanced, 120 ohm output impedance,
s/n >0507 - active-balanced, 120 ohm output impedance

Outputs (Tape):
Unbalanced, tip-left, ring-right, sleeve-ground, 2.4k ohm output impedance

Power (Internal):
2 AA alkaline batteries, 6 hours life typical with +4 dBu signal into 600 ohms, no phantom power

Power (External):
5 - 18 VDC via 4-pin Hirose connector (pin-4 positive, pin-1 negative), voltages above 14 VDC cause no damage to unit, but will open an internal poly fuse. Poly fuse will reset when voltage is removed.

Power LED:
Green indicates power and good battery. Red indicates power and low battery. LED turns red when approximately 1 hour of battery life remain (with phantom power off). Green with external DC power.

Frequency Response:
20 Hz - 30 kHz, +0.1, -0.5 dB; -1 dB at 5 Hz & 50 kHz (relative to 1 kHz with 150 ohm source, gain controls set at 50%)

Input Clipping Level:
-10 dBu minimum

Output Clipping Level (Tape):
+11 dBu (2.75 V RMS) minimum with 100k ohm load

Common Mode Rejection Ratio:
100 dB minimum at 80 Hz, 60 dB minimum at 10 kHz

Channel Separation:
Greater than 80 dB at 1 kHz (gain controls set to 50%)

High-Pass Filters:
80 Hz or 160 Hz (switch selectable), 6 dB per octave

Phantom Power:
48 V through 6.8k resistors or 15 V through 680 ohm resistors (switch selectable)

Limiter:
Thresholds adjustable per channel from -10 dBu to +18 dBu, 10:1 limiting ratio, 5 mS attack time, 100 mS release time, Amber/Red LED indicates limiting/clipping, Dual mono or stereo linked

Internal Voltage Rails:
±15 V, regulated

Polarity:
All inputs to all outputs, non-inverting. Pin-2 of XLRs "hot" to unbalanced inputs and outputs.

Metering:
Seven segment GaN (Gallium Nitride) LED meter with three intensities, peak responding

Operating Temperature Range:
0 to 70 degrees C, 32 to 160 degrees F

Dimensions:
43 mm x 94 mm x 140 mm (h x w x d), (1.7" x 3.7" x 5.5")

Weight (unit only):
0.8 kg, 2.0 lbs.

Weight (packaged):
1.2 kg, 3.0 lbs.

Certifications:
meets FCC Part 15 Class B, eligible to bear CE mark