BEHRINGER COMPRESSOR/LIMITER CL9 Kick ass with a powerful, percussive sound on your clean guitar and melt steel alloy when playing lead with ultimate sustain This BEHRINGER product has been designed to compete head to head with leading products on the market "Smoothes out" volume peaks and provides endless sustain with ultra-stable dynamics Dedicated Sustain, Level and Attack time controls for awesome sound shaping Status LED for effect on/off and battery check