Hi! Welcome to the fourm.
Bose has propriety technology/connections/devices not seen by folks outside the owner circle. The quickest option will be to call their help line or take the amps to a qualified tech.
Also, you might get a better response if you post some details about the amps, how they are connected, etc.
It might work best if you can post a picture or link for the specific amps in question. Use the
Post pad Thread because it takes 5 posts before one can submit a link in the message.