This model is rack mountable in 19 ".
The equalizer has 15 bands of 2 times (once per channel).
It has an input channel or RCA jack and one output channel no jack or RCA
There is a low-cut (I did not notice the cutoff frequency)
There is a gain adjustment and three LED's display against saturation.
Setup is simple, this device is accurate and reliable.
I do not know the manual (it is not even necessary to read, because of the simplicity of the device).
I use the equalizer in the evening, connected between the output of my hand mixer (Expelec mix002a) and the entrance to the PA.
Already used instrument (piano).
Very satisfied with the sound from this unit.
Good value, I use it for 5 years.
I would definitely do it again this choice if I had to buy one.