ipad version only sees inputs 1/2 on a 4 port interface

^{Originally posted by **rdica** June 5, 2026}
Hi, I'm not sure this is specific to Jamulus on iPad...

iPad Pro 11" MTXP2LL/A iPadOS 26.5
Behringer UMC404HD USB interface
Jamulus 3.12.1 for iPad

Mic in port 1, instrument in 2, I can hear both in Jamulus. I plug an external src stereo output into 3/4 and nothing. The interface is receiving as I can see the input level LEDs light up, and I can hear it if I turn the mix knob to direct monitoring.
Garage Band receives input from 3/4 and is audible when monitoring is enabled so it appears the interface is in working order.
Jamulus seems to provide a limited inputs option.

iPad sound setting:

Jamulus audio setting:

There are only those two options.

In the past I'd thought I'd seen a screenshot of Jamulus audio inputs on a Mac that showed more input options for interfaces with more than two hardware inputs, so I'm wondering whats different between Mac version of Jamulus and iPadOS version?

Thanks!