Owners - http://www.analoguetube.com/#!owners-users/c1ku5
Simon Saywood and his company, Analogue Tube, have gone the extra mile to make faithful re-creations of the famed Fairchild 660 & 670 compressor/limiters. Time to come nerd out about history and components.
Excerpt from Analog Tube's website:
The AT-101 is a faithful recreation of the original Fairchild 670 stereo limiter. The AT-101 is built using traditional point-to-point wiring methods and standard turret component mounts. The audio path and power supply are completely free from any printed circuit boards.
The AT-101 like the original Fairchild 670 has been assembled completely by hand and uses high quality modern components. The tube complement is exactly the same using a new generation 6386 remote cut-off triode developed to replace the original 50 year old tube types many of which were used in the Fairchild 670.http://www.analoguetube.com/#!at101-fairchild670/csin
Excerpt from Sound On Sound magazine:
The journey from drawing board to studio rack has taken over five years, and along the way, he’s managed to get component manufacturers to put into production a direct replacement for the GE Five Star 6386 tube, eight of which (matched, of course) were used in the original device. He's also sourced custom-made transformers from Sowter, and has redesigned the power supply to be more efficient than that of the original ’50s device. The result: the Analogue Tube AT101.
There’s really only one major change in operation, with the removal of the Lat/Vert mode, which switched the original device into mid/side mode. Instead, and potentially more useful for the studio user (mid/side compression is normally associated with mastering, not tracking), the AT101 has a stereo link control, meaning both channels can be controlled by the knobs of channel one.
Cosmetically, the AT101 varies slightly from the Fairchild, with more modern-looking knobs and switches, but the layout of the front panel is identical, complete with the screwdriver-adjustable ‘zero’ and ‘bal’ calibration controls. The Service Panel, the bottom-most strip of the device, has simple temperature-status LEDs, which indicate whether the 101 is running ‘normal’ or ‘hot’. This is not a cut-off or a warning, says Saywood, merely a signal that it might be a good idea to provide more ventilation for the device.http://www.soundonsound.com/news?NewsID=10967
Ronan Murphy's review - https://www.youtube.com/watch?v=yiezBrIsXTs