so I bought this new mixer (http://www.musicstore.com/en_EN/EUR...-channel-mixer-DSP-effects/art-PAH0009261-000) and the behringer UCA222 interface, which are connected by RCA/RCA, and most of the times (yes, it doesn't happen always) whenever I'm listening the drums through the interface, the fx is only processed to my right headphone and the left one stays completely raw. any idea of what it could be? thanks
