ATMOSPHERE features 9 built-in digital reverb types, including SPRING, CHURCH, PLATE, EKO-VERB, SHIMMER, COMET, REWIND, FOREST, PULSE, apart from the traditional MIX, DECAY, and TONE adjustment, it has Modulation effects depth control dedicated for Modulation effects. The TRAIL function switch is for switching on the Trail function, allowing the tone of the effect to fade out and sound much more natural between switching on and off!