Boss CS-3 Compression Sustainer, Electric Guitar Effect Pedal@+Without deteriorating the original sound, the BOSS Compressor / Sustainer does his work unobtrusively but effectively (exactly what you would want from a good compressor). Peak levels are limited while the quiet passages are raised, serving the assertiveness (especially clean tones), and generating a more balanced sound. At extreme settings, a significant extension of the sustain is possible - suitable if you want to play a solo with cleaner amplifier setting. The CS-3 is versatile adjustable, noteworthy is the tone control that can compensate for a loss of height with heavy compression.@+@+, Particularly loud sounds will be lowered while very low raised to provide a uniform, fat sound, Controls: Level, Tone, Attack & Sustain, Power consumption: 11 mA, Power supply with a 9 V battery or a 9 V DC power supply (coaxial connection - negative inside - not included, Article Nr #409939#), Dimensions (W x D x H): 73 x 129 x 59 mm, Weight: 400 g