RedSeven Mini Line MixerDouble Stereo Line Mixer is a line level professional device for parallel processing, with a fixed mix of 50 50 (dry wet). Thought as the ultimate and most compact solution in the business to mix up to two stereo returns with incoming dry signal into a single stereo output. To avoid any ground loop issue, sends and returns are transformer isolated. The whole unit can operate at nominal +4db line level signal. Controls Left Side INPUT (mono): this is