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.
Whilst most of the AT-101 is the same as the original there have been a few minor changes to the front panel and electronics; The Lateral/Vertical switch has been replaced with a 3 position switch that includes the normal Lat/vert functions - exactly as in the original units - but also a Stereo Link IN/OUT position. The CVT regulation transformer is standard on all units this is a world-wide transformer for a regulated heater voltage of the critical 6386 tubes during operation. There is a regulated 5amp DC supply available. Finally a simple electronic traffic light system monitoring temperature has been added.
All production models come with a choice of front panel colours finished in enamel
original parts in the original box nothing comes close to it!