Extron AXI 44 AT Four-Channel Analog Audio Interface with Transformer Isolation 4 In, 4 Out Dante Audio Interface w/ DDM & AES67

The Extron AXI 44 AT is a compact, four-channel analog audio interface that converts unbalanced stereo audio from consumer sources to balanced stereo audio for professional AV systems. It features four independent stereo input pairs on dual RCA connectors (eight RCA total) and outputs four balanced stereo channels on captive screw terminals, providing clean signal conversion with transformer isolation on each channel to eliminate hum and ground loops. This interface is ideal for integrating multiple consumer devices with RCA outputs—such as media players, laptops, set-top boxes, DVD/Blu-ray players, or gaming consoles—into balanced audio chains with amplifiers, DSPs, mixers, matrix switchers, or presentation systems in classrooms, conference rooms, boardrooms, training facilities, and control environments.

Each channel includes independent adjustable gain control (±12 dB) for precise level matching, transformer-based galvanic isolation to prevent noise, and a rugged metal enclosure for durability. The small form factor allows easy mounting under tables, in racks, or behind equipment, while captive screw terminals ensure secure, vibration-resistant connections in permanent installations.

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FAQ

• What is the main purpose of the AXI 44 AT? It converts four independent unbalanced stereo audio sources from RCA to balanced stereo audio for professional AV systems, with transformer isolation per channel.
• Does it require power? No, the AXI 44 AT is fully passive and requires no external power supply.
• How is gain adjusted? Independent rear-panel trim pots provide ±12 dB gain adjustment per channel to match input and output levels precisely.
• What type of isolation does it use? Transformer isolation per channel provides galvanic isolation and ground lift to eliminate hum and ground loop noise.
• What connectors are used? Inputs are eight RCA female (four stereo channels, unbalanced), and outputs are four 3.5 mm captive screw terminals (balanced stereo, one per channel).
• Can it be used in rack installations? Yes, its compact size and mounting options make it suitable for rack, under-table, or surface mounting in AV systems.