Kobelt Electronic Transfer Box and Full Follow-Up Amplifier 7173-KAS & 7173-TXX. Item for sale: Kobelt Electronic Transfer Box and Full Follow-Up Amplifier 7173-KAS & 7173-TXX – This sale includes: One Transfer Box and One Amplifier. Condition: Item is used but in good condition – Data: This unit’s data has been sanitized (If applicable). Pictures: What you see in pictures is what you will receive. Additional accessories are not included. If we have a quantity of this item available, it might not be the exact item in pictures but it will be in similar condition. REC Condition: F1-C3 AA-04961. You don’t love it? If you have any questions, please send us a message. If you have any questions, please message us for assistance. Items Tested for Functionality & Cosmetically Graded.