Audio levels (increase) amplify

Recording audio via Firewire (through camera)…
For various reasons are recording without an audio mixer with ext mike/on board microphone into a Z7 using HDV via Firewire into BionxTV. The audio levels are low, going into Bionx.
The audio controls work fine reducing the level BUT is it possible to amplify the levels??

Amplifying the signal is not possible. Many cameras allow to set the audio leven though.