The legendary stereo tube compressor, rebuilt to the original design. The Heritage Audio Herchild Model 670 is a two-channel tube-based variable-mu compressor that faithfully reproduces the design and exact components of the original Fairchild 670 – first made for broadcast and vinyl lacquer cutting. It is made for mix bus, mastering and stereo sources.
Why customers choose it
Who it is for
Mastering and mixing engineers, studios that want the classic 670 sound on the stereo bus, and producers working with mid/side processing.
What’s in the box
- 1 x Heritage Audio Herchild 670
- AC power cord EU and US
Specifications
| Type | Stereo tube variable-mu compressor |
|---|---|
| Tubes / transformers | 22 valves, 9 transformers |
| AGC modes | IND, LINK, LAT VERT, LAT VERT LINK |
| Input impedance | 2 kohm |
| Output impedance | 600 ohm |
| Output level | +30 dBu clipping point |
| Signal-to-noise | 120 dB |
| Self-noise | Under -82 dBu |
| Harmonic distortion | Under 1% up to +18 dBu output (no limiting) |
| Power | Over 200 W |
| Dimensions | 482 x 265 x 200 mm (6U) |
| Weight | 13.3 kg |
Good to know
- It takes 6 rack spaces and weighs 13.3 kg – plan rack space and support.
- In LINK modes, both channels are controlled by the average of the two channels’ settings.
FAQ
What is Lat/Vert?
It is the 670’s original lateral/vertical mode for record cutting; today it works as mid/side compression.
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