Help me understand Zoom H5 line-input

[keith.uk]

After quite a bit of digging, I think I got to the bottom of the inputs for the H4N, much of the information comes from this post.

It seems that the XLR part of the connecter is at -60dBm whereas the phone part is at -10dbM. For a line input of +4dBm, the guy who wrote that article uses an attenuator of -15dBm on the phone part. This video shows someone using an attenuator of -60dBm for the XLR part. That all adds up and makes sense. The XLR is for microphone input the phone is for instrument input.

I'm not so clear on what is happening on the H5. It's advertised as accepting line-input from mixers, etc. It has a pad of 20db which can be applied to the inputs. Does this imply that the XLR and phone part have the same rating? How does the rating compare to the H4N.

Also, the H5 has further 3.5mm input which is advertised as for use with either microphone or line input. How is that possible without attenutation?

These are the specs of of the H4N

These are the specs of the H5

 

[Rick R]

"Does this imply that the XLR and phone part have the same rating? How does the rating compare to the H4N."
- The manual is a little vague. On both the H4n and H5, the XLR part of the combo connector is mic level. The 1/4" jack is line level. On the H4n, the 1/4" (TS) input is unbalanced and @ nominal -10dB. The H5's 1/4" (TRS) input is balanced and will accept a nominal +4dB (pro line level). The 3.5mm input is primarily for unbalanced mics and has plug-in power, though it could be used for an unbalanced line-in providing the signal is low. The plug-in power should be disabled (software menu) for self-powered or non-powered inputs.
I've played around with a H4n but not the H5, I'm interpreting the specs.

 

[graywolf]

The specs make little sense. For instance, dBm is watts, what does that have to do with mic input?

How are we supposed to understand this stuff when the manufacture apparently doesn't?