Thanks for the tip. I hadn’t tried adjusting the mix from 100% to 50%, so that works to send the signal from inputs 1&2 to both outputs 1&2 and 3&4. That did the job, but not quite perfectly. There is a noticeable fraction of audio latency between the outputs 1&2 and 3&4 which creates a sort of chorus / phaser sound. I tested it directly with a mixer, so I know it’s not happening downstream. There must be some latency created during the H90 routing process. If that’s the case, I might need to rely on a hardware stereo splitter box.
