API 3124V

Additionally, the 3124V offers Variable Output Level Control and switchable 3:1 output transformer selection. The unit has an internal 48-volt phantom power supply, which is switchable for each channel, as well as -20dB pad switches that affect both the mic and Hi-Z instrument inputs, both located on the front panel.

The 3124V also features up to 65dB of gain. Additionally, the Hi-Z front panel inputs feed directly to the op amps, which allow a low level input such as a guitar or bass to be amplified without a matching transformer or direct box. These Hi-Z inputs can take levels as high as +20dBu, making them perfect for keyboards and other high level devices. The mic preamp outputs are on rear panel male XLR connectors.

• Classic API Circuit Design

• Uses API 2520 Op Amps

• Variable Output Level Control

• 3:1 Output Transformer Tap Selection

• Four female XLR mic inputs

• Four front panel 1/4" Hi Z instrument inputs

• Front panel polarity switches

• Front panel -20dB pad switches

• Front panel mic/instrument switches

• Front panel 48V power switches

INPUT IMPEDANCE:

1500 Ohms Mic, 470 K Ohms Un-Balanced, HI-Z in

OUTPUT IMPEDANCE:

Less than 75 Ohms Channel Outputs

NOMINAL LEVELS:

XLR Channel Output +4 dBu

STEREO OUTPUT LEVEL:

Unbalanced: nominal -2, Balanced: +4

FREQUENCY RESPONSE:

+0, -5, 10 Hz to 20 kHz (-.5 at 10 Hz)

NOISE EIN:

-129 Mic, -125 Un-Bal. Actual

MEASURED NOISE:

Better than -91 dBm / below Nominal +4.

DISTORTION:

All Outputs at +4 out, .03%, at +22, .09% Max

GAIN RANGE:

150 Ohms Input 10 dB Min., 65 dB Max (inc. PAD), Un-Bal. Input 14 dB Min., 50 dB Max

VU METER:

Calibrated for XLR Outputs, OVU=+4 dBu, (-12, -6, -3, 0, +3, +6, +18)

CONTROLS:

• GAIN

• PAD (20 dB)

• 48 Volts

• POL (polarity)

• MIC (mic/un-bal)

• VU

• AC

POWER CONSUMPTION, QUIESCENT:

19.2 Watts

SIZE:

19" X 1.75" (1U) X 11" Deep

SIZE (BOXED FOR SHIPPING):

23.25" X 6.5" X 16.5"

ACTUAL WEIGHT:

10.38 lbs.

SHIPPING WEIGHT:

14.06 lbs