Yes I am using the 4-channel parametric EQ.
Well, it is possible to manually enter the Q value into the player. But whenever you change the gain for that band, the Q value is reset to an incorrectly calculated value. This makes it very frustrating to set up the EQ as every time the gain is changed the Q needs to be changed as well.
The Q is also a calculated number, depending on how much gain that band has. I suspect the same calculation is done for 2-channel or 4-channel so patching the binary will make one work correctly, or the other, but not both.