When I received the EQ I was very happy with the sound and the functions (sweepable lowcut /highcut, and sweepable notch filters). All as expected from Klark Teknik. After 6 month and not many gigs I have a very loud signal on one channel like pink noise. After sending it back for repair to Thomann my returned EQ had exactly the same problem as it had never been fixed. On top of it the EQ was damaged on the return and am still in the process of sending reports... and having no EQ.