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Samson SM4U 4-Channel Rackmount Stereo Line Mixer

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    The SM4U features an array of connections for both wired and wireless audio sources. Plug-in a wired microphone to the XLR-1/4" combo jack, or go hands-free by connecting a Samson XPD Digital Wireless* system to the front panel USB jack. The Music channel includes stereo RCA inputs on the rear panel, as well as front-mounted stereo 1/4" and 1/8" inputs. Lastly, stream audio wirelessly via Bluetooth.

    Voice Priority:
    The mixer includes a high-quality, bidirectional USB-C jack for interfacing with computers as well as tablets and smartphones that have USB-C ports. This allows you to record a mix, fly-in audio tracks for a presentation, or use the SM4U as a video conferencing mixer.

    The Voiceover control offers priority ducking of up to 30dB while talking through a mic or using the XPD Wireless input. The Voiceover Hold knob lets you adjusts the active ducking hold time from 0.5 to 3 seconds. Whether you’re leading a group ex-class or making announcements, intelligibility is key.

    Installed Sound:
    The compact SM4U takes up just half of a 1U rackspace and can be installed using the included rackmount kit. It can be mounted adjacent to most Samson Concert 88/288 and Concert 99 series wireless half-rack receivers. The mixer includes stereo XLR and RCA outputs that can be configured for either mono or stereo operation. A rear-mounted Master Volume allows the overall output level of the mixer to be preset for the room or application without the worry of accidental changes.

    Samson SM4U 4-Channel Rackmount Stereo Line Mixer Features
    • 4-channel 1U half-rack stereo line mixer
    • USB interface for connecting with computers or tablets with USB ports
    • XLR-1/4" balanced microphone input
    • Stereo line channel with RCA, 1/4" and 1/8" (3.5mm) inputs
    • Bluetooth connectivity to wirelessly stream from a mobile device
    • Samson XPD Series USB Port (wireless system sold separately)
    • Voiceover control with priority ducking and variable hold time
    • Rear panel master volume control
    • 15V phantom power
    • Selectable Mono or Stereo output setting
    • Rackmount kit and power adapter included

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    Samson SM4U 4-Channel Rackmount Stereo Line Mixer Specifications

    Samson SM4U 4-Channel Rackmount Stereo Line Mixer Specifications
    Product Specifications Samson SM4U 4-Channel Rackmount Stereo Line Mixer Specifications
    • Frequency Response: 20Hz–20kHz ±2dB (Mic to Main)
    • T.H.D.: <0.02% (Mic/Line & Line to Main)
    • Maximum Input Level: -23dBu @ 1kHz (Mic Input)
    • Maximum Input Level: 2dBu @ 1kHz (Line Input)
    • Maximum Output Level: +14dBu
    • Bit Depth: 16-bit
    • Sample Rates: 44.1kHz, 48kHz
    • Signal-to-noise: >96dB
    • Bluetooth: V4.0, A2DP V1.2
    • USB I/O: USB-C
    • Phantom Power: 15V DC
    • Product Dimensions: 8.75" x 5.5" x 1.75" / 223mm x 138mm x 43mm
    • Product Weight: 1.76lb / 0.8kg
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