I just got my Pod Go, connected it via USB-A->USB-C, and trying to record into Ableton Live gives me levels that never get above -20dB for a clean tone, and even with an amp dialed up to 10, never comes close to being "loud". (Yes, I have the volume pedal at '100'.)
Switching to GarageBand and comparing the levels to any of Garageband's built-in "drummer" tracks is similarly low. Only when everything is dialed up to '10' and compressed, does the sound merely match the perceived volume of a simple drum track.
Additionally, the clean channels (3/4) are low as well, and can't be boosted.
This is with firmware 1.12 7a876bc1.