API 3124V Discrete 4-Channel Mic/Line Preamplifier

 

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Dale #:API-3124V

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  • Like the API 3124+, the 3124V is a high quality, compact, 4-channel mic preamp. It is equipped with the RE-115 K mic input transformer and the proprietary output transformer found in all API mic pres and throughout the API product line. 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.

    Features:

    • 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), 48Volts, 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.
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