• Ultra Slim Wireless Microphone Mixer
  • 2.4GHz Digital Wireless Technology
  • Adjustable Balance Echo Level
  •  Portable and Easy Setup Design
  • Low Latency Uncompressed Audio


Stop spectating, start participating!  With the Sceptre SoundMixer (SE4220), speak to an audience, sing your favorite tunes, and play music all at once with the same, compact device. The SoundMixer makes these feats possible by masterfully blending your voice with any music or program that is being played on your TV or smart devices. No application installation is required so sing and play immediately after simply connecting the device to the TV or smart devices using the Line-In input.  For a better music selection, use a USB cable to connect the SoundMixer to a computer or laptop.  Two, wireless microphones are included and will allow you to rock those duets to the pleasure of any audience and control PowerPoint while giving a presentation.

Key Features

Customer Service

Our customer service representatives are, and have always been, based in the USA, guaranteeing that our customers’ needs are met as efficiently as possible.

30 years of Experience

For over 30 years, Sceptre Inc. has maintained its winning formula of designing and delivering quality products for affordable prices in the USA.  Founded in City of Industry, California, our mission ensures that our products continually evolve to better suit your needs.

2.4 GHz Digital Wireless Technology

Avoid interferences issues with this high quality audio sound and low power consumption. 

Portable Design

Compact and light weight design.  It is perfect for travel.

Easy Setup

Just plug and play. No Application installation required. 

Low Latency Uncompressed Audio

Enjoy the best audio quality without audio delay.

Adjustable Echo Level

Easy Echo Effect control perfect for Karaoke setup.

Karaoke System

Instantly upgrade your TV and Sound bar into a Karaoke System.

Convenient Design

Microphone Volume Control Built-in.

Operating Frequency

2.4 GHz (2404M – 2474M Hz)

Frequency Channel

25 CH

Frequency Response

20 Hz – 20kHz

Frequency Carrier Spacing

3 MHz

Frequency Modulation

Gaussian Frequency-Shift Keying (GFSK)

Transmitting Rate

3 Mbps RF data rate.

Audio Sampling Rate

48 kHz / 16 bit

Antenna Type

Planar Inverted-F Antenna (PIFA)


S/N -84 dB (A-weighted)

Dynamic Range

> -82 dB (Linear Max S/N)


20m (without any obstructions between the headphone and transmitter)


< 1%

Transmit Latency

< 10ms

Microphone Operating Power

1.5V AA size Battery x 2

Microphone Operating Hours

Up to 30 Hours for brand new 1.5V AA Battery

AC Adapter Input

100V – 240V, 50/60Hz, 0.2A

AC Adapter Output

DC 5.0V, 1.0A


DC 5.0V Power Input x 1

Mini USB Input x 1

3.5mm Line-In x 1


3.5mm Line-Out x 1

6.3mm Audio-Out x 1

Product Dimension (inch)

Microphone Dimension: 10.63” 1.96” x 1.96”
Sound Mix Dimension: 6.85” x 4.72” x 0.98”

Packaging Dimension (inch)

11.81” x 7.01” x 3.74”

Product Weight (pound)

Microphone Weight: 0.48 lb.
Sound Mix Weight: 0.43 lb.

Gross Weight (pound)

2.64 lbs.

What‘s Included

Sound Mix x 1

Microphone x 1

AC Adaptor x 1

Mini-B plug to USB Cable x 1

3.5mm line-in Male-to-Male audio cable x 1

6.5mm Male-to-Male audio cable x 1

User Manual x 1

Warranty information x 1



Limited Parts and Labor

3 months

Technical Support

Customer Service