Okay, here's the way the switches work.KT-700 Bench
Note: The two switch DIP switch operates as follows: SW1 - Down - Separate inputs, SW1 - Up - Combined on UHF Inputs, SW2 appears appears to have no function.
SW2 does have a function.
SW1 and SW2 should always be opposite.
SW1 ON and SW2 OFF is combined input.
SW1 OFF and SW2 ON is separate inputs