The Ross and Dyna Comp circuits are almost identical to each other (except for maybe one resistor and one capacitor). However, the Route 66 takes those designs and combines them with our Pure Tone buffer, an original tone circuit, a pre-amp circuit and a Clean Mix circuit, giving it far more flexibility and clean headroom (clean gain potential)… and that’s just the compressor! You also get a killer overdrive thrown in for no extra charge… not a bad deal!