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API 3124V 4-Channel Microphone/Line Preamp

Discrete 4-channel mic/line preamp
MFR# 3124V
API 3124V 4-Channel Microphone/Line Preamp
API 3124V 4-Channel Microphone/Line Preamp API 3124V 4-Channel Microphone/Line Preamp video


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Since the 1960s, API has provided high quality, discrete, studio grade pre-amps. Their punchy sound is highly preferred by audio professionals on drums, rock guitars, bass, vocals, or anything that needs a little attitude. There are over 700 API consoles in leading recording studios and broadcast facilities around the world, now with the API 3124V you can get that same pro sound, without buying the entire console.

The 3124V has four discrete microphone pre-amps, the same preamplifier found in all API consoles. The microphone preamp can give you up to 65 dB of gain, where the Hi-Z input patches directly to the Op-Amp, allowing line level signals such as an electric guitar, bass, or keyboards to be plugged directly in without the use of a direct box.

On the front panel, each channel is equipped with a VU meter, gain control, phase polarity button, 48 V Phantom Power button, 20 dB pad that works on the mic and line inputs, mic/line selector, and the Hi-Z 1/4" input. The rear panel has XLR inputs and outputs for each channel. The 3124V also features Variable Output Control and switchable 3:1 output transformer selection.


  • Four high quality discrete microphone preamplifiers, same as in all API Consoles
  • 65 dB of gain per channel
  • Front Panel Hi-Z Input
  • No need for an external DI, line level plugs directly to Op-Amp
  • Uses the RE-115 K mic input transformer and the same output transformer that is used in all
  • API equalizers
  • Easy front panel access per channel
  • Digital VU meter
  • Phase polarity
  • 48 V phantom power
  • 20 dB pad that works for both Mic/Line inputs
  • Mic/Line selector
  • Variable Output Level Control
  • Switchable 3:1 output transformer selection

Additional Information

Condition New
Channels 4-Channel
Chassis 19-in Rackmount
Rack Spaces 1u
Input Connectors Analog XLR
Output Connectors Analog XLR

Loved it so much, had to buy a 2nd. Wonderful on live drums.

By Michael K on February 6, 2019

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