The CTT 60 uses 10 frequency bands per channel. It is also equipped with level controls on its left and right .. and a bypass switch ..
What about .. a two year old child is able to use it.
Breath, phase shifts and approximations predominate. Do not count on him for a real frequency correction .. his interest is definitely elsewhere.
Brand that is totally unknown, this little machine built in a priori thirties is able by itself to make real achievements of mediocrities. His only interest is research to the contrary of what we expect in audio. As for MCE 60 (echo chamber of the same manufacturer), this little box is all black for a single purpose to go against all logic qualitative.
If you are looking for a cock up the vocals so say .. spectacular. I offer a winning formula: a microphone plugged into a DO21 Lem MCE 60 itself connected to the CTT 60 and get a sound you will not soon forget!