Logic faders in dbfs? How much headroom?

Hello,
It is my understanding that logic's faders are set in dbfs. However, I have also heard that when the levels on a fader hit 0 (in the red) in logic, that you still have 4 more db of headroom. Is this true? Does that mean that 0 in logic is actually -4dbfs? If someone could please clarify this point I would greatly appreciate it. Thanks.

However, I have also heard that when the levels on a fader hit 0 (in the red) in logic, that you still have 4 more db of headroom. Is this true?
No.
Logic is a 32-bit float mixer implementation, which means than individual channels inside Logic's mixer have around 1500dB of dynamic range. This means that if you have a channel peaking at 0dBFS, you can increase the gain by hundreds of dB, and as long as you bring that gain down again before the output channel, you will not clip.
Therefore you needn't worry, as it is almost impossible in normal use to actually clip a channel. the meters are just there for convenience, because there are reasons why should keep your channel levels under control, but you can drive your signals all the way into the red (and then some) and as long as you bring the output fader down to not clip, no clipping will be taking place.
The only channel you need to not clip is the output channel.

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diaphones wrote:
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Ciao.

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Hi
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Logic faders in dbfs? How much headroom?

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