Extremely Low input signal in any DAW using Multimix 8 USB FX

I am using usb connection from my Multimix 8 USB FX and I am getting an extremely low input signal...Same in any DAW used (Pro Tools First - Cubase Elements 8 - Garageband).
I suppose it is a driver issue, since using the USB Codec, I cannot adjust the input level in my Macbook (as I am able to with the built in option)
Is there any chance of creating a driver for this series of products (multimix)?
Increasing the sound in post (EQ or Compression gain), is messy and hiss is not able to be avoided.
Poor signal is like a flatline.
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