StamChild SA-670 MK2 – Stereo Analog Tube Compressor

Historic Tube Compression

Next Batch:November 2022

$4,500.00

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

StamChild MK1 owners: 4.599

Available on backorder


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If you loved the Stamchild 670 MK1 you will love The StamChild SA-670 MK2 even more.

Our take on the most iconic and finest sounding tube compressor in history, the Fairchild 670.

Recreating the finest sounding stereo 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 secondly the compression curve had to be identical to the original. With this in mind we developed a few upgrades and carefully tested each component and its interaction with the circuit.

After many months of research and test we determined there was a way, and so the StamChild SA-670 MK2 was born.

With the aid of 8 premium transformer reproductions made by AMI in the US and Brian Sowter in the UK and the use of 18 Tubes we have managed to make this unit virtually indistinguishable to the original.

The StamChild SA-670 MK2 also uses a German made chassis and faceplate, as well as the historically correct VU meter, Knobs, and Neutrik XLR connectors.

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, Control Amp Input Transformers and 2 extra Tubes to not only match the amplifier but also the compression curves and add DC Threshold Control.

With these measures we are able to bring the cost down while preserving the original tone, without touching the audio path, and without removing the character produced by the transformers and tube on the control amp.

100% satisfaction guarantee – if you don’t love your StamChild SA-670 MK2, we’ll refund you

If you’ve used an original Fairchild before, we’re extremely confident the StamChild SA-670  MK2 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 MK2 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.

Fully Stepped Mastering Version is available per request.

 

Technical Specs

 

  • AMI UT26 Input Transformer
  • Custom Sowter Control Amp Input Transformer
  • Custom Sowter XL Custom Output Transformer
  • Custom Step-Up Transformers
  • NOS 6BA6 and 12AX7 tubes
  • DC Threshold
  • High Pass Filter
  • LAT-VERT Function
  • Dry Wet Knob
  • Output Knob
  • XLR inputs
  • XLR outputs
  • Voltage switch selector (115V or 230V)
  • Hand made in Chile
  • 6U, 250mm depth
  • 2-year warranty
  • 30-day money back guarantee

STAM-AUDIO-SA670-STAMCHILD-USER-MANUAL.pdf

Additional information

StamChild MK1 owners

StamChild MK1 owners

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