Telos Delta 100 Digital Broadcast Hybrid Phone Line Audio Console Interface IFB

Gentner Microtel Broadcast Telephone Handset Line Interface Recording Patch IFB

Gentner Microtel Broadcast Telephone Handset Line Interface Patch IFB (2)

Audio Implements on-camera audioclarifier (AI-IFB-left)

Audio Implements Ifb On-Camera Audio Clarifier Tube

Comrex TCB-2 Auto-Answer Telephone Coupler IFB Listen Line Monitor Responder 2A

Gentner Microtel Audio Interface Box With Adjustable Send & Receive Levels Multi

Gentner Microtel Audio Interface Control Box Send Receive Level 910-020-001