S.LA.X. – Free Retro Compressor Plugin S.LA.X. is a free retro compressor plugin loosely inspired by the famous LA-2A. It has an aggressive and dark character, which suits well for vocals, drums and acoustic guitars. S.LA.X. Controls Gain: The output level. Peak: The amount of compression. Emphasis: The amount of high frequency influence in the side chain. Smooths out sibilants. Comp/Lim: Alters the speed, ratio and knee of compression. Overflow: The output limiter indicator turns on when output exceeds -0.1dbfs. No signal can get past -0.1dbfs. Inside option screen (+) there are three audio coloring settings: flat, fat1 and fat2. Price: Free Info & Download >> Sonic Anomaly / S.LA.X.