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Sennheiser XSW 1-ME2-A

XS Series wireless lavalier microphone system (548-572 MHz, "A" band)


Item # 143XS1M2A

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Our take on the Sennheiser XSW 1-ME2-A

When you're speaking in public, the convenience of a wireless system with a clip-on microphone can help you get your point across. Sennheiser's XSW 1-ME2 wireless lavalier microphone system offers their legendary sound quality and utility in a simple-to-use system that's easy on your budget.

Make yourself clear

When you're speaking in public, the convenience of a wireless system with a clip-on microphone can help you get your point across. Sennheiser's XSW 1-ME2 wireless lavalier microphone system offers their legendary sound quality and utility in a simple-to-use system that's easy on your budget.

Hours of power

The XSW 1-ME2 system includes the EM-XSW 1 receiver, the ME 2-2 omnidirectional lavalier mic, and the SK-XSW bodypack transmitter. The transmitter runs for up to ten hours on two AA batteries, while four-stage indicators monitor your battery's charge level. 

Simple setup

The receiver scans automatically for available frequencies and syncs with the transmitter automatically via an infrared interface. The receiver's true diversity reception gives you a dependable connection with the transmitter, while the frequency bank system offers 10 compatible frequencies per bank for simple matching. The receiver's rugged ABS plastic case protects it from the bumps of life on stage. 

Product Highlights:

  • wireless lavalier mic system with bodypack transmitter and single-channel receiver
  • includes receiver power supply and two AA batteries
  • transmitter and receiver displays monitor battery life
  • true diversity reception (switches antennas for best reception)
  • battery life: up to ten hours on two AA batteries
  • frequency response: 50-16,000 Hz
  • dimensions:
    • receiver: 7-7/8"W x 1-11/16"H x 5"D
    • transmitter: 2-3/4"W x 3-3/4"H x 1-1/16"D
  • weight:
    • receiver: 12 oz.
    • transmitter: 3-3/8 oz.
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • One lavalier mic w/attached lapel clip and 67" cord (terminated in a male 3.5mm plug w/locking collar)
  • One EMXSW1 Wireless receiver
  • One SK-XSW bodypack transmitter
  • NT 12-5 CW Power supply w/70" cord (DC output: 12V/ 500mA)
  • 3 Outlet adapters for power supply (USA
  • EU
  • UK)
  • 2 AA batteries
  • Specification booklet (Eng / Span / Fren / Others)
  • Quickstart guide
  • Safety guide (Eng / Span / Fren / Others)
  • Frequency chart
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Hands-on research

Product Research


Overview: The Sennheiser XSW 1-ME2 is an easy to use wireless lavalier microphone system designed for moderators, and presenters featuring a compact bodypack transmitter and lightweight lapel-worn microphone. The updated receiver features a clean and intuitive front panel that allows you to simply power it on and let its automatic frequency management do the rest.

System: Operating in the A frequency range (548 - 572 MHz), the system utilizes wideband FM with up to 24 MHz of switching bandwidth. Eight frequency banks are available, each with up to 10 factory preset channels. The overall signal-to-noise ratio is ≥ 103dBA with THD at ≤0.9%.

Lavalier Microphone: The included ME 2-2 lavalier microphone is a condenser mic with an omnidirectional pickup pattern. This type of pattern picks up sounds equally from all directions, allowing it to be clipped to a lapel or collar in various orientations and still pick up the speaker. At less than 1" in diameter and featuring an attached 3/4" lapel clip, the ME 2-2 is small and unobtrusive. It also comes with a built-in 67" cord terminated in a 3.5mm plug with locking collar.

Transmitter Bodypack: The SK-XSW bodypack is a belt worn, compact, wireless transmitter. It features an easy-access top mounted Mute On/Off switch along with a Power Indicator LED, a 5" antenna, and a 3.5mm socket for the microphone plug. A small LCD on the front of the transmitter can display the Bank and Channel numbers along with the Operating Frequency and a Battery Level meter. A fold-down front panel allows access to the battery compartment for the 2 included AA batteries along with the Power button and a 4-position attenuation switch for different levels of signals: 0dB, -10dB,-20dB, and -30dB.

Receiver: The EM-XSW1 receiver operates on the double superheterodyne principle and offers diversity antenna switching of the internal antennas. The receiver can be set to automatically scan for an available channel, or the channel can be set manually.

  • Front Panel: Controls include Volume +/-, Channel +/-, Set/Scan, and a Sync button for syncing the microphone to the receiver. Two 7-segment LEDs display the Bank and Channel numbers along with three illuminated icons for Battery Level, an Antenna icon indicating whether the transmitter is synced to the receiver, and a Sensitivity icon that lights green if the signal level is good or lights amber to indicate a clipped or overdriven signal.
  • Rear Panel: The rear panel includes a balanced XLR output along with an unbalanced 1/4" output jack, both of which can have their output levels changed with the corresponding Mic/Line switch. Along with the Power input, the rear panel also includes a Squelch dial. Squelch is the ability of the transmitter/receiver to suppress or mute the channel if the signal level weakens enough. This helps keep out unwanted channel noise and stray signals from other wireless devices, especially when there's no signal being sent from the Mic/Transmitter.


  • System:
    • Modulation: Wideband FM
    • Frequency Range: (A) 548 - 572 MHz
    • Switching Bandwidth: Up to 24 MHz
    • Frequencies: 8 Banks, each with up to 10 factory preset channels
    • Signal-to-Noise Ratio: ≥ 103 dBA
    • THD: ≤ 0.9%
    • Transmitter Synchronization: 2.4 GHz, low power OQPSK (only active during synchronization)
  • Receiver:
    • Receiver Principle: Double superheterodyne
    • Diversity Principle: Antenna switching diversity via internal antennas
    • Sensitivity (at peak deviation): < 3μV at 52 dB(A) rms S/N
    • AF Frequency Response: 50 Hz - 16k Hz (-3 dB)
    • Max. AF Output Voltage (at peak deviation, 1 kHz AF):
      • 1/4" (unbalanced): +6 dBu
      • XLR (balanced): +12 dBu
    • Audio Adjustment Range: 45 dB, adjustable in 5 dB steps
    • Squelch: Adjustable from 3 dBμV to 28 dBμV (combined with pilot tone)
    • Line/Mic Level: 20 dB, switchable
    • Housing: ABS
    • Power Supply: 12 VDC / 500 mA
    • Dimensions: Width - 7.875", Height - 1.75", Depth - 6.0" (incl. power cord)
    • Weight: 12 oz.
  • Transmitter:
    • RF Output Power: 10 mW
    • AF Frequency Response: 80 Hz - 16 kHz
    • Audio Input: 3.5mm jack
    • Transmitter Sensitivity Range: 0 to -30 dB, adjustable in 10 dB steps
    • Housing: ABS
    • Operating Time: Approximately 10 hours
    • Dimensions: Width - 2.750", Height - 3.750" (8.50" incl. antenna), Depth - 1.0"
    • Weight: 3.4 oz.
  • Lavalier Microphone:
    • Transducer: Condenser (pre-polarized)
    • Sensitivity: 20 mV/Pa
    • Pickup Pattern: Omnidirectional
    • Maximum SPL: 130 dB
    • Dimensions: Diameter - 0.875", Length - 1.0"
    • Connector: 3.5mm w/locking collar

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