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BAE 312A 500 Series Mic Preamp/DI

Single-channel 500 series microphone preamp/DI with BAE 2015 opamps and Jensen input and output transformers - fast and punchy sound

Product Description

The BAE 312A is a world-class preamp that combines a capacitor-free circuit with high-quality Jensen transformers and BAE’s proprietary 2015 op-amp for a fast, punchy sound. Perfect for recording drums and fattening up bass DI tracks, the BAE 312A delivers a thick, rich tone with crisp, clear transients.


The BAE 312A preamp is hand-wired using high-quality components to ensure world-class tone. Hearty Jensen transformers at the input and output stages are perfect for adding warmth to any instrument. The capacitor-free signal path easily allows transients to pass through for punchy, percussive recordings. BAE’s custom built discrete 2015 op-amp provides a clean, transparent sound that takes well to EQ and dynamics processing.


The BAE 312A features an intuitive design with easy-to-use controls. A large, rugged dial controls gain settings, offering an impressive 66 dB of gain. The mic/instrument switch allows you to toggle between the microphone and high-impedance line level input on the front panel for recording direct instrument signals. The pad button reduces input gain for recording particularly loud instruments like heavy-hitting drummers or roaring guitar amps. The phase reversal button inverts the phase of a signal—perfect for recording snare bottom mics! The 48 V button provides phantom power for condenser microphones.


The BAE 312A includes a remote power supply with a four-foot cable, making it easy to mount anywhere in your studio. BAE’s custom power supplies are capable of delivering four times the current required by the preamps for optimum sound quality. The BAE 312A features easy-access XLR input and outputs on the back for connecting microphones and other devices, as well as a high-quality instrument on the front for connecting guitars and synthesizers. Even the switches on the BAE 312A are high quality with gold contacts to ensure they last a lifetime.


  • Made using BAE 2015 opamps
  • Supplied with Jensen input and output transformers
  • Remote power supply with four-foot cable capable of four times the current needed by the preamps for optimum sound quality
  • Switches have gold contacts for long life
  • XLR connectors on the back for mic input and output and phone jack in front for direct input
  • High impedance direct input for guitar and synthesizer
  • Separate front panel switches for phantom power

Product Specifications

Condition New
Tube or Solid State Solid State
Channels Single-Channel
Chassis Module
Module Type 500 Series
Module Slot Count 1 Slot
Direct Input Yes
Digital I/O No

Product Reviews

5 out of 5 stars.
Review Count (1)

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Just finished a track where all we used was the BAE 312s. From Bass, to Drums, to Vocals to Acoustics to Electrics and more it excelled with a natural open and punchy tone. In some cases there was no need for compression while tracking - they even made a pair of bongos sound great wiht a Shure Beta 58!!! Now that is something!!! In short, just wanted to say that I am digging the BAE 312As - Thanks VK!!!

By Bryan on May 16, 2017

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
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.
Martin C.
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.
Phil T.
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.
James P.
Thank you so much! Vintage King has been so fair and easy to work with. I can't thank you enough. It feels good to trust such a hefty purchase to folks who are so helpful and knowledgeable. Vintage King is a sound designers dream store.
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You guys have excellent customer service and I am excited about the next upgrade I complete on my fifth recording facility. I've been in the studio business for forty plus years. The salesman I worked with at Vintage King was the best of the best. You all rock!
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My experience with Vintage King was excellent. The order was here fast considering it was out of stock. The sales person had SKB send it to me directly and I couldn't have been more pleased.
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From the minute I placed my order I was kept well-informed through each step in your process. Even though I was buying a comparatively modest piece of gear, your attention to detail made me feel like I was purchasing a six-figure mixing desk.
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