The DSP section of our amplifier has a total of 48dB headroom. That means that even if you add all 7 PEQ bands as +3dB on top of each other you still have plenty of headroom to go.
You will obviously reach the amplifiers output limit faster with the same input level on the signal if you add that much of gain on the PEQ bands, but in terms of sound quality and headroom it is not a problem.
Check out our pro tips on PEQ adjusting if you would like more information on that topic.