The model 3124+ 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 3124+ is 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