Audio-Technica ATW-3255DF2EU Wireless In-Ear Monitoring DF2: 470.125 - 607.875 MHz

Wireless In-Ear Monitoring Built for Touring Reliability

The Audio-Technica ATW-3255DF2EU brings professional in-ear monitoring to performers who need dependable RF performance in crowded spectrum environments. Operating across 470.125 to 607.875 MHz, the system delivers 138 MHz of UHF tuning bandwidth, so finding a clean frequency is straightforward whether the gig is a local club or a festival main stage. The ATW-T3205 rack-mount transmitter and ATW-R3250 body-pack receiver share design DNA with the 3000 Series wireless microphone line, integrating cleanly into an existing rack.

What Sets This System Apart

The body-pack receiver uses true antenna diversity, with the headphone cable doubling as a secondary antenna to maintain a stable RF link during movement-heavy performances. A built-in cue mode lets a single receiver monitor multiple transmitter channels, useful for engineers during line checks. Wireless Manager software allows a full channel plan to be deployed to every connected transmitter from a single RF scan, eliminating manual frequency coordination across large rigs.

RF Performance and Wireless Range

Wide UHF tuning and antenna diversity keep dropouts to a minimum across touring environments, while switchable RF output power adapts to regional regulations.

• Operating Frequencies: 470.125 to 607.875 MHz (DF2 band)
• Tuning Bandwidth: 138 MHz
• Operating Range: 90 m (open environment)
• Maximum Simultaneous Channels: 49 per band
• RF Output Power: 50 mW high / 10 mW low, switchable

Audio Quality and Signal Processing

Optimized internal DSP delivers wide stereo separation and low distortion, while the receiver's built-in headphone amp drives in-ear monitors with enough headroom for loud stage environments.

• Frequency Response: 40 Hz to 14.1 kHz
• Stereo Separation: 75 dB
• Dynamic Range: >90 dB (A-weighted)
• Total Harmonic Distortion: <0.2% at 1 kHz
• Headphone Output: 40 mW at 12 ohms

Hardware, Controls, and Connectivity

The transmitter is a 1U half-rack unit with OLED display, XLR inputs, loop outputs, and RJ-45 network port. The compact receiver weighs just 102 g and runs on two AA batteries, slotting into the same charging stations as the 3000 Series wireless mic body packs.

• Receiver Dimensions: 64 x 23 x 82 mm
• Receiver Weight: 102 g (without batteries)
• Transmitter Dimensions: 210 x 191 x 43.4 mm
• Transmitter Weight: 1,100 g
• Battery Life: 5–7 hours (NiMH, 1900 mAh)
• Receiver Controls: Balance, EQ, Gain, Limiter, Volume, Sync, Power