Vintage Digital & Analogue Studio Effects

Vintage Digital

Fairchild 670

Fairchild 670 Tube Limiter

The Fairchild 670 Tube Limiter was the brainchild of Estonian immigrant to the USA, Rein Narma. Rein licensed the design to Sherman Fairchild and the rest as they say, is history...a legend was born.


Finding a Fairchild 670 to buy today is akin to finding the Holy Grail. They are very rare, and these days can be over 60 yeas old, which is a lot for tube electronics made in the late 1950s! When ever an original Fairchild 670 does come up for sale, they command huge dollars, as there were less than 1000 units ever produced.

The Fairchild 670 was base don the Fairchild 660, a mono tube limiter also designed by Rein Narma, with around 800 units produced. The first ten units were hand built by Rein himself, and the first unit went to Rudy Van Gelder who used it to cut lacquers for Blue Note Records and Vox Classical records. The second unit went to Olmsted Sound Studios in New York where Jimi Hendrix would record some years later, but the third unit went to guitar legend Les Paul, himself an audio pioneer of epic proportions.

After establishing the Fairchild 660 among studio greats, Rein with the help of Fairchild, went on to develop the stereo Fairchild 670, which was released in 1959. The 670 used 20 tubes, 11 transformers and 2 inductors in a 6RU sized rack. The Fairchild 670 weighed a whopping 29.5 kg!

The Fairchild 670 (and 660 for that matter) is known for it’s fast attack time and slow release times. The fast attack time allowed the Fairchild 660 to be used in broadcast stations to prevent explosive peaks, but the Fairchild 670 being a stereo version allowed it to also be used for stereo lacquers in record production.

The Fairchild 670 has the ability to be used as a stereo compressor/limiter, or for lateral and vertical components of stereo disc cutting whereby the Fairchild 670 splits the two channels via a matrixing network, limits them separately and then combines them through a second matrix to preproduce the stereo signal once again.

The Fairchild 670 and 660 spent many years with great success in the broadcast space and disc cutting rooms. Eventually, studio engineers realised it’s value in the recording process and the Fairchild 670 and 660 took on a new life. Geoff Emerick was one of those engineers and while working at Abbey Road with The Beatles, started to use the Fairchild 660 on vocals, from Revolver onwards. The Fairchild legend simply grew from here, and today you will find Fairchild 670 and 660s still in use, if not certainly a clone of a Fairchild or even plugin version.

Compressor or Limiter?
The Fairchild 670 can be adjusted to work either as a compressor, with a ratio of 2 to 1 and a threshold of 5 db below normal program level; or as a peak limiter, with a compression ratio of 30 to 1 and a threshold of 10 db above normal program level; or it can be adjusted to operate anywhere in-between these two extremes.



Weight: 29.5 kg

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Plug-in Options

IK Multimedia Vintage Compressor

This module is based on the “Holy Grail” of compressor/limiters, the Fairchild™ 670.
With a faithful reproduction of each control, this is an incredibly accurate model that captures every nuance of one of the best Fairchild units available, one considered a true “golden reference”.

Klanghelm MJUC Variable Tube Compressor

The Klanghelm MJUC is the most effortful Klanghelm plugin to date. It took almost two years of extensive, dare I say “excessive”, research and development to create.

Nomad Factory LM-662 Limiting Amplfier

The Nomad Factory LM-662 Dual Limiting Amplifier is a recreation of the classic Fairchild 660 limiter. When using the LM-662, music and instruments reacts the same as a Fairchild 660 does.

Overloud COMP670 Tube Compressor Limiter

Comp670 is the Overloud recreation of a very rare legendary tube compressor. It has a unique and distinctive tone thanks to large amount of transformers in the signal chain which gives it a very warm tone.

OverTone DSP FC70 Vintage Limiter

Inspired by the legendary smooth, effortless control and uniquely musical character of the classic Fairchild 670 limiter, the FC70 adds the weight and authority of a high-end vintage mastering compressor / limiter – taming dynamics without robbing the mix of power and detail.

Slate Digital Virtual Buss Compressor
Slate Digital Virtual Buss Compressors is a suite of three unique-sounding dynamic processors that are modeled from some of the most classic mix buss compressors in the audio industry, including the Fairchild 670.
Universal Audio Fairchild Tube Limiter Colelction
Waves collaborated with GRAMMY®-winning producer/engineer Jack Joseph Puig (U2, Rolling Stones, Lady Gaga) to capture every distinctive nuance and harmonic detail of the vintage Fairchild 670 device housed in Jack’s own studio.
Waves PuigChild Compressor
The LA-2A Classic Leveler Plug-In Collection for UAD-2 hardware and Apollo interfaces features immaculate models of three highly sought-after LA-2A units.

Fairchild 670 Tube Limiter Reviews

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