Mercenary Audio - API 3124MB+ 4 Channel Mic Preamp/Mixer

While the mic-pres in the 3124MB+ have been a staple sound of the recording industry for close to four decades, the "MB" (Mix Buss) section of this unit is what makes it shine. Beyond the 4x2 mix capability with level, pan and an aux send on each pre you also have the availability to insert an outboard device after each pre before it enters the mix buss. From summing guitar mics to building thunderous tom tracks the 3124MB+ is an absolute "must have" for any serious engineer.

API 3124MB+ features

The model 3124MB+ utilizes the same microphone preamp circuit that is used in all API consoles. It uses the RE-115 K mic input transformer and the same output transformer that is used in all API equalizers. All four mic inputs of the 3124MB+ are powered by an internal 48 volt phantom power supply, front panel switchable for each channel. Also provided is a front panel 20 dB pad switch that effects both the Mic and Line in.

Uses API 2520 Op-Amp
Classic Console Circuit
Four XLR Mic Inputs
Four 1/4" Un-Balanced Inputs
Front Panel Polarity Switch
Front Panel 20 dB PadSwitch
Front Panel Mic/Line Switch
Front Panel 48V Power Switch
Output Clips at +30 dBm

SPECIFICATIONS

Input Impedance: 1500Ω (mic), 470KΩ (Hi-Z)
Output Impedance: Less than 75Ω Channel Outputs
Nominal Levels: XLR Channel Output +4dBu
Stereo Output Level: Nominal -2 (unbalanced), +4 (balanced)
Clipping Level: XLR Channel Output better than +28dBm
Frequency Response: +0, -5, 10Hz - 20kHz (-0.5 at 10Hz)
Noise EIN: -129 (mic), -125 (unbalanced) Actual
Measured Noise: Better than -91dBm/below Nominal +4
Distortion: All outputs at +4 out, 0.03%, at +22, 0.09% Max
Gain Range: 150Ω input 10dB - 65dB (including Pad), unbalanced input 14dB - 50dB
VU Meter: Calibrated for XLR Outputs, OVU=+4 dBu (-12, -6, -3, 0, +3, +6, +18)
Controls: Gain, Pad (20dB), 48V, Polarity Switch, Mic/Line, VU meter

MANUALS & PDFs

API 3124 MB+ Product Info via Adobe pdf file

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