The F660 combines classic compressor design with modern technologies, it features a menu driven user interface, a large LCD display with innovative one button control, and separate level and gain-reduction LED meters. Legendary fully balanced Fairchild 660/670 signal path.

Passive relay controlled input attenuator, computer controlled tube operating points for perfect balance resulting in much wider frequency response and lower noise.

Gain reduction is achieved by four new production JJ 6386 tubes. The analog side-chain uses solid state components for better performance and digital control.