Avcomm Aircraft Intercoms:
Expandable, stereo and portable: Avcomm new AC2EX may possibly be the only intercom you will ever need! Measuring a mere 5.1″ by 2.85″, the AC2EX is designed to produce powerful communications you can depend on. The compact design makes it easy to carry in your flight bag, a feature pilots who rent aircraft will especially appreciate. Need four positions? Simply add the AC-2XM module to accommodate additional passengers.