Discrete tube Mic Preamp with DI

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Classic American sound.

The 312-5T is famously known in the recording world as a “turbo API”. It consists for a tube 312 preamp which retains the aggressive character of the original but adds further harmonic distortion and coloration with the aid of a tube output stage followed by an LA-2A style 5:1 output transformer.


The 312-5T is built with premium components

The US made 1:8 input transformer and Chilean hand made SA-2520 op amp are exact replicas of those found in an original 312 preamplifier from the 70’s and have been carefully auditioned to impart the same character and punch that these units are known for. The output transformer is custom made in Europe and all tubes are auditioned and selected. The 312-5T also features Stam aluminum knob made in the EU.

Sometimes strict adherence to an original design is absolutely called for, but sometimes an updated and improved version with the same great sound but more flexibility is just what a modern engineer or mixer needs. This results in the classic 312 sound but with a higher THD and bigger low end. The 312-5T is ideal for users looking to record electric guitars, drums, and hard vocals.

100% satisfaction guarantee – if you don’t love your 312-5T, we’ll refund you!

Each 312-5T can be tested for 30 days with a full money back guarantee.

Technical Specs

  • Custom US made 1:8 input transformer
  • Custom US made 5:1 steel output transformer
  • Stam Audio SA-2520 op amp
  • Vishay/BC capacitors
  • Completely discrete signal path
  • 70dB of Gain
  • Trim
  • Stam Audio knobs
  • 48V phantom power
  • Impedance selection (300 – 1200 ohms)
  • Hand made in Chile
  • 2-year warranty
  • 30-day money back guarantee


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