ETS SM4 4 Channel Mixer/Switcher/Amplifier
Model No
SM4
$160.45
Product Highlights
- 2 Watt speaker power amplifier
- 3" full range speaker
- 3.5mm headphone jack
- Line level input and output jacks for connection to DVRs and tape recorders
- Recorder monitor switch

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The ETS SM4 4 Channel Mixer/Switcher/Amplifier is a versatile and highly efficient stand-alone base station designed for seamless monitoring of up to four SM1 series microphones. With a variety of connection options and modes of operation, it delivers superior audio performance while providing users with flexibility for live monitoring or playback.
ETS SM4 Mixer Features
- Speaker Power: 2 Watt power amplifier ensures clear sound output and effective audio monitoring.
- Speaker Size: 3" full range speaker enhances audio quality for an immersive listening experience.
- Headphone Connectivity: 3.5mm headphone jack allows for private listening without disturbing others.
- Input/Output Connectivity: Line level input and output jacks facilitate easy connection to DVRs and tape recorders.
- Recorder Monitor Switch: Simplifies switching between monitoring and recording functions.
- Microphone Level Controls: Individual level controls for each microphone provide tailored audio management.
- Microphone Switch: In/out switch for each microphone allows users to control input options efficiently.
- Operational Modes: Two modes of operation enable users to select from 16 modes or mix in/out any combination mode for diverse applications.
- Master Volume Control: Adjust overall sound output easily for optimal listening.
- Power Requirement: Operates on 12Vdc @ 400ma for energy efficiency.
- Durable Design: High-quality metal enclosure ensures durability and longevity.
- Safety Features: Reverse polarity protected and fused for secure operation.
- Compact Dimensions: Dimensions: W 1.75 x L 2.75 x H 1.25 allow for easy integration into various setups.
ETS SM4 Detailed Specifications
| Feature | Details |
| Speaker Power | 2 Watt power amplifier |
| Speaker Size | 3" full range speaker |
| Headphone Jack | 3.5mm headphone jack |
| Input/Output Jacks | Line level for DVRs and tape recorders |
| Recorder Monitor Switch | Yes |
| Microphone Level Controls | Yes, for each microphone |
| Microphone In/Out Switch | Yes, for each microphone |
| Operational Modes | Select from 16 modes or mix in/out combinations |
| Master Volume Control | Yes |
| Power Requirement | 12Vdc @ 400ma |
| Durability | High-quality metal enclosure |
| Safety Features | Reverse polarity protection and fused |
| Dimensions | W 1.75 x L 2.75 x H 1.25 |
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