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API 3124MV 4-Channel Microphone Preamp

All-in-one 4-channel discrete mic/line preamp and stereo mixer that offers API’s legendary sound in a compact rack unit with an intuitive interface
MFR# 3124MV

Product Description

The API 3124MV is an all-in-one 4-channel mic/line preamp and stereo mixer that offers API’s legendary sound in a compact rack unit with an intuitive interface. Designed for professional engineers to use onstage, in broadcast rigs, and in the recording studio, the 3124MV has everything you need to quickly and easily record great tracks.


Recording consoles can be big, bulky and expensive. 500 series modules are great but they don’t always offer enough space to execute some of the more complex analog designs. The 3124MV packs four channels of API’s signature preamps in a compact rack unit, allowing you to capture great recordings anywhere there’s great music.

Quickly connect guitars, keyboards or line-level outputs using the convenient front-panel hi-Z instrument inputs. Engage the switchable 3:1 output transformer selection and drive the 3124MV for a little extra analog grit and harmonic saturation.


The 3124MV also includes a built-in stereo mixer for additional flexibility and control. All four channels are equipped with y-cable inserts and a post-fader aux send, allowing you to create the ultimate signal chain while recording or mixing. The built-in aux return pot allows you to blend in subtle time-based effects or powerful parallel processing.


When Saul Walker started API in 1968, one of his first inventions was the 2520 op amp, which has been an integral part to API’s bright, punchy, clear sound. The 3124MV continues API’s 50 year legacy of by utilizing the same classic API circuit design and 2520 op amps used in their consoles.

After the release of the their first console, API quickly became the leading console manufacturer for radio and television networks. It didn’t take long for recording studios to catch on, and soon API began receiving rave reviews from engineers and producers on the tonal quality of their preamps. To this day, over 700 API consoles are in use across the nation and around the world. Albums like Rumours by Fleetwood Mac, Wasting Light by Foo Fighters and Van Halen’s eponymous debut are shining testaments of the quality and range of API preamps.


  • Classic API Circuit Design
  • Uses API 2520 Op Amps
  • Variable Output Level Control
  • 3:1 Output Transformer Tap Selection
  • Four XLR Mic Inputs
  • Four 1/4" Un-Balanced Inputs
  • Front Panel Polarity Switch
  • Front Panel 20 dB Pad Switch
  • Front Panel Mic/Line Switch
  • Front Panel 48 V Power Switch

Product Specifications

Chassis19-inch Rack-mount
Rack Spaces1u
Input ConnectorsAnalog XLR
Output ConnectorsAnalog XLR

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In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
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The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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