The SMDA4 is an active microphone distribution amplifier designed to mix audio from up to 4 separate microphones into a single unbalanced RCA output. This compact device features individual level controls for each microphone, ensuring optimal audio mixing and clarity. With reverse polarity protection and a fused design, it guarantees safe operation. The included 3â RCA patch cord and 12VDC AC power adapter make setup a breeze, allowing users to efficiently expand their audio reception across multiple zones while saving time and money.
ETS SMDA4 Key Features
- Level Control: Individual level controls for each microphone ensure precise audio mixing and optimal sound quality.
- Reverse Polarity Protection: The device is designed with reverse polarity protection to prevent damage and ensure safe operation.
- Easy Cable Termination: Simplifies setup and installation, allowing for quick and hassle-free connections.
- Compact Size: The small footprint makes it easy to integrate into various audio setups without taking up much space.
- Power Efficiency: Operates on 12VDC @ 20mA, making it energy-efficient while providing reliable performance.
ETS SMDA4 Detailed Specifications
| Channels | 4 |
| Output Type | Unbalanced RCA |
| Power Supply | 12VDC AC Adapter |
| Current Draw | 20mA |
| Dimensions | Compact design for easy integration |
| Included Accessories | 3â RCA patch cord, power adapter |



















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