How many amps can we draw from the USB host port of the Duo X?

I currently link and power up 4 small synths using a Raspberry Pi and would like to not have to take the Pi with me when I already have the Duo X.
For that to work, I need to be able to get 2.5A out of the USB host port. Is it within specs?

I got the reply through support, but thought it could still be useful to others:

β€œThe DuoX (and Duo) can output a maximum of 1.5A out of their USB host port.[…] It is advised though to not push this to the limit constantly and remain around 1.2A (6 watt).”