Vfx Control - Great controller but can the sound be improved

I used my Vfx Control live for the first time last night at a local pub gig.
The controller and Cross worked fine together, but I did notice the sound, the music sounded flat (if you know what I mean). I needed to mess around with the EQ's on both the Vfx Control and the in house sound system to get it to a level and sound which I was happy with.
A couple of weeks before I used my Hercules 4-Mx on the that same system and the music sounded punchy but with the Vfx Control it didn't.
As a controller it is great but I feel it's lacking in the sound department (compared to my other controller)
Just out of interest, can any improvement's be made to the soundcard (in relation to the EQ)via a firmware update or something.
The controller and Cross worked fine together, but I did notice the sound, the music sounded flat (if you know what I mean). I needed to mess around with the EQ's on both the Vfx Control and the in house sound system to get it to a level and sound which I was happy with.
A couple of weeks before I used my Hercules 4-Mx on the that same system and the music sounded punchy but with the Vfx Control it didn't.
As a controller it is great but I feel it's lacking in the sound department (compared to my other controller)
Just out of interest, can any improvement's be made to the soundcard (in relation to the EQ)via a firmware update or something.