SA-RED47 – 2-Channel Tube Microphone Preamplifier

Dual Channel Tube Mic Preamp with DI, NOS Tubes, & Sowter Input and Output Transformers

Coupon Code:sa-red47-first-100
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$1,290.00 $1,090.00

The SA-RED47 is an exact replica of one of the tube preamps behind the famous Abbey Road sound.

Available on backorder

An exact replica of one of the tube preamps behind the famous Abbey Road sound


Practically everyone in music knows the name Abbey Road Studios, and the portfolio of top tier artists who made their greatest records there. Central to their sound was the famous REDD.51 console, which contained the REDD.47 preamplifier. The aggressive, punchy sound made possible by the REDD.47 was a staple of the late 1960s, a period which defined modern music. The SA-RED47 fully respects the sonic qualities of the original, while housing the unit in a modern, dual channel shell.

We developed the SA-RED47 as a one-off custom order…however, when we heard how it sounded, we knew we had to open the product out to a wider audience. Our dual channel unit features an adjustable gain control, an output trim pot, 48v phantom power and reverse polarity, all of which add versatility to the simple original design. There is also a front mounted DI input.

As with all Stam Audio products, the focus is about bringing a classic or unreachable piece of audio production history and placing it in the hands of any level of producer. We are pleased to say that we can adopt this approach while still maintaining the highest levels of quality, on par with the original unit as a minimum.

We have used the finest quality NOS EF86 tube to recreate the depth and aggressiveness of the original mic pre sound. The unit has Ohmite carbon resistors, Vishay capacitors and 1% precision matched resistors. We also utilize Sowter input and output transformers which are accurate replicas handmade in the UK. Although the most expensive transformers available, they are also by far the best sounding ones.

100% satisfaction guarantee – if you don’t love your SA-RED47, we’ll refund you

If you’ve used an original before, we’re extremely confident the SA-RED47 will put a big smile on your face every time you use it. However, even if you’ve never touched the original, as gear-lovers ourselves we understand that the only way to really know if this mic preamp is right for you is to put it through its paces. That’s why the SA-RED47 comes with a 30-day money back guarantee. This allows you to get it into your studio and see how it impacts upon your recordings. If you love it (and we think you will!), great…keep the unit and create amazing music with it. If not, no problems.

Just send it back to us and we’ll fully refund your purchase. Don’t worry, whichever way you decide to go we will remain friends

Technical Specs

  • Original circuit and schematic
  • Sowter input transformer
  • Sowter output transformer
  • NOS EF86 tube
  • Vishay/BC capacitors
  • Completely discrete signal path
  • 46 dB of Gain
  • Trim
  • 48V phantom power
  • Phase reverse
  • Assembly by hand in Chile
  • 2-year warranty
  • 30-day money back guarantee


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