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Samson SM4U 4-channel Half-rack Line Mixer

4-channel Line Mixer with XLR, Stereo Line, RCA, 1/4", and 1/8" Inputs, XPD Wireless USB Port, Bluetooth, Priority Ducking, and Master Volume Control
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Item ID: SM4U
Samson SM4U 4-channel Half-rack Line Mixer
Price:$249 and 99 cents
$42.00 suggested monthly payments with 6 month financing‡ 36 month financing available* with $399.00 minimum purchase on one invoice.

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Samson SM4U 4-channel Half-rack Line Mixer
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Price:$249 and 99 cents
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A Compact Line Mixer with Crystal Clear Sound

Sweetwater live sound pros have a great recommendation for commercial and connected sound systems: the Samson SM4U 4-channel Half-rack Line Mixer. With this mixer, you can control four zones of audio through a compact single-rack unit that’s ready for installation. The SM4U provides a wealth of connections, including an XPD wireless USB port for computer and tablet connection, Bluetooth to stream from wireless device, and, of course, mic and stereo line inputs. Connection from multiple sources makes the SM4U an excellent choice for fitness clubs, night clubs, schools, gyms, restaurants, and more. Lastly, a voiceover control offers users priority ducking so their voice can always be heard over sound coming from other inputs. Without a doubt, the SM4U will change the way you mix audio!

Samson SM4U 4-channel Half-rack Line Mixer Features:

  • 1U half-rack makes for a small footprint with big audio capabilities
  • Great for commercial and connected sound system installation
  • 4-channel mixer that allows for connection through multiple sources
  • Priority ducking through voiceover control lets voices be heard over all other audio
  • XPD wireless USB port allows for connection to computers, laptops, and tablets
  • Stream from a wireless device through Bluetooth
  • Excellent choice for fitness clubs, gyms, restaurants, night clubs, schools
  • Mic and stereo line inputs as well as back panel RCA inputs

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Tech Specs

  • Type: 4-Channel Stereo Line Mixer
  • Channels: 4
  • Faders: Rotary Pots
  • Inputs - Mic Preamps: 1 x XLR-1/4" combo
  • Phantom Power: Yes
  • Inputs - Line: 1 x Dual RCA Stereo, 1 x 1/4", 1 x 1/8"
  • Outputs - Main: 2 x XLR (main), 1 x Dual RCA Stereo
  • USB: 1 x Type A (Samson XPD Wireless USB Input)
  • Bluetooth: Yes
  • EQ Bands: 2-band
  • Rackmountable: Yes
  • Power Source: 15V DC power supply
  • Height: 1.75"
  • Width: 8.75"
  • Depth: 5.5"
  • Weight: 1.76 lbs.
  • Manufacturer Part Number: SASM4U

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Reviews

Perfect PA mixer

The feature on this mixer is a rare find. My client needed a speaker on a stand with a mic and music for an event. I didn't want the client to have to turn up and down the music when making frequent quick announcements… so I needed a ducker. This worked perfectly! With the amount of adjustable from the front panel AND a Bluetooth option… it was/is perfect.

The Right Features - Mostly
I usually don't buy Samson products particularly because I tend to use more advanced level gear. But I was researching this time for my daughter and for a budget friendly mixer that offers "ducking", which is not that prevalent among mixers. This one has the ducking (aka voice-over) feature with adjustability for how much and for how long. My daughter tells me it has been awesome, and can't believe the difference it has made for her. It's being used for line-dance instruction / DJ-ing. The instructions over the wireless headset mic needed to be clearly understood while music was playing simultaneously. This made that happen. Just enough of a dip in the music volume during the vocal instructions, then right back to full volume. This mixer has many other great features, including small details, like a mono/ stereo switch, and it is built very well.
It could be improved upon by adding a 3 band EQ, at least on the mic channel, but I solved that with outboard gear in our case. IMO, that would've made it perfect for the various applications it could be used for that involve a microphone.
Music background: Lifelong musician & electronics tech