UnFairchild 670M II

Classic

The Fairchild circuit could be one of the most coveted and time tested compressors of all time. It has proven its extraordinary universal musicality for over 5 decades on countless genres of music. The beauty of its design is in its simplicity. The audio path, primarily consisting of only 2 transformers and 4 paralleled vari-mu tubes, can provide a gentle smoothing of levels or an explosive, energizing compression that will make any recording leap out of the speakers.

The UTA UnFairchild is a painstaking recreation of the classic sound of this circuit.

“The audio path of the circuit is incredibly simple. It's just an input transformer, four 6386 tubes in parallel, and an output transformer.”

Flexible

The original Fairchild is limited in how it can be applied, so we set out to add the flexibility expected of a modern compressor without changing or losing the classic sound: true bypass, output gain metering, stereo linking and M/S processing, a user DC threshold control, variable attack and release, feedback and feedforward modes, and sidechain processing, all on detented controls.

We also made careful, minute adjustments to the circuit so the 6386 vari-mu tubes run at a more comfortable voltage, which drastically increases their lifespan.

“There is no compressor on this planet that is worth $100,000.”

“It has six presets. And if one of those doesn't get you where you need to go, then you've got a $100,000 doorstop that's not getting used on your mix.”