Hi viperdriver5150, did you mean you’re turning Kill Dry on for I/O 1&2? Are you splitting the signal before you connect to the H90 or are you using one of the inserts to feed your dry amp?
If you’re splitting your signal before the H90, you could run the inserts of the H90 in stereo and route this stereo insert in parallel with your algorithms. This would allow you to send signal to another set of amps/cab sims.
On a side note, is it possible to set independent output levels?
If you’re referring to using I/O 3&4 for a second stereo output, you can adjust the output level independently in the Routing Menu where you have send and return levels for the insert.