StamChild SA-670 – Analog Tube Compressor

Historic Tube Compression

Next Batch:July 2019

(2 customer reviews)

$3,500.00 $2,999.00

The StamChild SA-670 is our take on the most iconic and finest sounding tube compressor in history, the Fairchild 670.

Available on backorder


Recreating the finest sounding tube compressor in history

While developing this project we had two main objectives: first and foremost, the audio path had to remain as close as possible to the original units, and it had to be affordable. With this in mind we developed a few prototypes and carefully tested each component and it’s interaction with the circuit. After many months of research and test we determined there was a way, and so the StamChild SA-670 was born.

With the aid of premium transformer reproductions made by Brian Sowter in the UK and the use of sixteen NOS 6BA6 tubes per channel and one 12AX7 tube per channel, we have managed to make this unit virtually indistinguishable to the original. The StamChild SA-670 also uses a German made chassis and faceplate, as well as the historically correct VU meter, Knobs, and Neutrik XLR connectors.

In order to reduce the cost of manufacturing these units we have made some modern implementations which do not affect the audio path. We have changed the tube based power supply to a solid state one, which has no bearing on the sound. We also changed the control amp to a hybrid setup, while maintaining the tube character.

With this measure we were able to greatly reduce the cost of production, while preserving the original tone, without touching the audio path, and without removing the character produced by the tube on the control amp.


100% satisfaction guarantee – if you don’t love your StamChild SA-670, we’ll refund you

If you’ve used an original Fairchild before, we’re extremely confident the StamChild SA-670 will put a big smile on your face every time you use it. However if you’ve never touched the original before, as gear-lovers ourselves, we understand that the only way to really know if this compressor is for you, is to put it through its paces. That’s why the StamChild SA-670 comes with a 30 day money back guarantee. This allows you to get it into your rack and see how it impacts 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.

Shipping will be 150 USD with DHL insured to the Americas, 175 USD to Europe and 200 USD to Asia.

Technical Specs

  • Sowter input and output transformer
  • True to the original Fairchild audio path schematic
  • 6BA6 and 12AX7 tubes
  • Simpson VU meter
  • Original release and attack times
  • Less than 0.5% THD
  • XLR inputs
  • XLR outputs
  • Voltage switch selector (115V or 230V)
  • Hand made in Chile
  • 4U, 200mm depth
  • 2-year warranty
  • 30-day money back guarantee

2 reviews for StamChild SA-670 – Analog Tube Compressor

  1. Alejandro Sanchez

    Alta máquina!!! Lo único que se puede decir de esta bestia. Ha sido un excelente trabajo de Stam, felicitaciones !! Personalmente recomiendo la versión con switches, que los hace más precisa en la calibración y recall, pero sea como sea es un compresor lleno de vida, tienen que escucharlo!

  2. Alejandro Sanchez

    Alta máquina, una verdadera bestia! En mi opinión no hay mejor manera de describirla. Es una máquina viva, en el buen sentido de la palabra, te exige que escuches atentamente, que sientas como interactúa con tu música, tienen un tremendo sonido, es dificil encontrar la palabra justa, porque no es HiFi, mucho menos LowFi, la distorsión no es como la de un equipo barato que mas que excitar, rompe toda la vibra, el SA-670 agranda, controla, tiene personalidad pero puede tratar al audio con cariño y suavidad. Stam la va a romper con este equipo!

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