• M2RA-A1B1 M2Ra digital IEM/IFB bodypack receiver front view with dual antennas, color LCD showing 687.500 MHz stereo, and blue locking headphone jack, Lectrosonics
  • M2Ra IEM receiver front view with color display showing 607.975 frequency, stereo mode and battery level, blue gain knob and two antennas, Lectrosonics
  • M2Ra IEM receiver front view on white background with both antennas extended upward and menu, back and arrow buttons below the display, Lectrosonics
  • M2Ra IEM receiver angled lifestyle shot on dark studio surface showing 687.500 display, blue gain knob and side belt clip, Lectrosonics
  • M2Ra IEM receiver top panel close-up showing blue gain knob, IR port and headphone output jack beside the display, Lectrosonics
  • M2Ra IEM receiver display and top panel detail showing 687.500 frequency, stereo indicator, full battery, blue gain knob and IR port, Lectrosonics
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Lectrosonics M2Ra Digital Stereo IEM IFB Body-Worn Receiver | A1B1

Lectrosonics M2Ra Digital Stereo IEM IFB Body-Worn Receiver | A1B1

SoundPro Item: 135513 | Part Number: M2Ra-A1B1

$1,574.00
$1,747.00 $1,574.00
Your Price Sold out
MSRP: $1,747.00 | MAP: $1,574.00

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  • AES-256 Encryption And Non-Encrypted Mode Operate Under One Firmware Version
  • Improved IP3 Performance For Reliable Operation In Congested RF Environments
  • P48 Protection On Headphone Jack Guards Against Phantom Voltage Damage
  • Switched Antenna Diversity During Packet Headers Ensures Seamless Audio Continuity
  • 2-Way IR Sync Enables Wireless Designer Software Integration For RF Coordination
  • DUET, DCHX, D2, And HDM Compatibility Modes For Multi-System Flexibility
  • Machined Aluminum Housing With Hard-Anodized Finish For Durability On Tour
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The Lectrosonics M2Ra is a professional body-worn stereo digital IEM and IFB receiver designed for performing artists, broadcast professionals, and touring engineers who need reliable wireless monitoring in dense RF environments. Successor to the M2R, the M2Ra delivers improved IP3 performance and P48 protection on the headphone jack, addressing real-world stage conditions where interference and phantom voltage exposure are constant risks. Its support for DUET, DCHX, D2, and HDM compatibility modes makes it a versatile drop-in across Lectrosonics digital ecosystems without requiring separate firmware builds.

The M2Ra pairs directly with the M2T transmitter as part of the Lectrosonics Duet system, using 2-way IR sync to exchange frequency and configuration data upstream into Wireless Designer software for coordinated RF planning across large deployments. Advanced switched antenna diversity during digital packet headers delivers seamless audio continuity without the artifacts associated with traditional diversity switching. The stereo headphone amplifier provides 250 mW of output to drive low-sensitivity in-ear monitors and earphones down to 10 ohms, making it practical for loud stage environments where signal headroom matters.

Machined aluminum housings with hard-anodized finishes and laser-etched markings hold up under the physical demands of nightly touring and install use, while keeping the unit lightweight for talent comfort. The high-resolution backlit color LCD and membrane switch interface give performers and engineers a clear, quick-read display under any lighting condition. Encrypted and non-encrypted operation coexist under a single firmware version, reducing management overhead for houses that run mixed-security monitoring setups.

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Specifications

WARNING
Moisture Advisory
Moisture, including talent's sweat, will damage the receiver. Use silicone sleeve (part #M2RCVR) or other protection.
Operating Spectrum
A1B1 (AU Locale)
520.000 - 614.375 MHz
Modulation And Encryption
Modulation Type
8PSK with Forward Error Correction
Encryption Type
AES-256 in CTR mode
Audio Performance
Frequency Response
10 Hz - 12 KHz, +0, -3 dB
THD+N
0.15% (1 kHz @ -10 dBFS)
Dynamic Range
>95 dB weighted
Adjacent Channel Isolation
>85 dB
Third Order Intercept
+15 dBu
Diversity Type
Switched antenna phase, during packet headers
Latency
Digital Source
1.0 ms plus Dante network
Analog Source
<1.6 ms
Connectivity
Audio Output
3.5 mm stereo jack
Power
Power Requirements
2 x AA batteries (3.0V)
Battery Life
7 hours (2 Lithium AA)
Power Consumption
1 W
Dimensions
Height (with knob)
3.5"
Width
2.375"
Depth
0.625"
Weight
Weight (with batteries)
5.6 oz / 159 g
Included Items
Case Insulating Pad
2x 35983 Case Insulating Pad M2R
Batteries
2x AA Lithium Metal Batteries
Hex Key
35854 .035 Allen Hex Key
Documentation
Instruction Manual

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