The first true advancement in our 2 and 4 knob compressor line. The new features are simple and straight forward; There is a simple Release Switch that is tuned for single coils or humbuckers. No more wondering if you have the attack or release set right; Gorgeous sounding Tone Control which emphasizes the most sensitive harmonics that can be lost in compression; Sports a Blend Control that retains the peaks in your playing and, more importantly, the proper phasing of your guitar signal; Offers the same gorgeous push of frequencies and sweetening of tone that the old comps gave you, now with the flexibility to easily handle any instrument