With detailed 24-bit digital audio and reliable wireless performance, the P3RA bodypack delivers professional personal monitoring to any corner of the stage. Patented Audio Reference Companding ensures the clearest sound, with ultra-low noise and no artifacts. Perform a scan and IR sync to automatically select the cleanest frequency available and easily assign a wireless channel. Adjust the volume and use MixMode technology or stereo mode to create a personal mix from two channels of audio.P3RA offers an upgrade to P3R, with all-metal housing, optional rechargeability, and advanced features including EQ and volume limiting.Easy to set up and operate, the Shure PSM 300 Stereo Personal Monitor System puts total freedom within reach of musicians at every level. Customizable two-channel mix and volume lets you hear every note in detailed, 24-bit digital audio from anywhere on the stage. So you can dedicate yourself to the performance. Never bound by wires or wedges.Main Features:LCD screen features high-contrast menu-based navigation for advanced features including volume limiting and 2-band shelving EQ with high and low boostMixMode technology enables adjustment of two independent monitoring mix levelsStereo mode enables adjustment of left / right balancePower save mode preserves battery life when earphones are not connected5-Segment battery status LEDs provide clear indication of remaining chargeWorks with PSM300 Stereo Personal Monitor SystemDelivers up to 6 hours of continuous operation with 2 AA batteriesOffers extended runtime with the Shure SB900 lithium-ion battery, which can charge in the bodypackIncludes P3RA, 2 AA batteries, battery adapter kit, zipper bag, and user guideSpecifications:Active RF Sensitivity (at 20 dB SINAD) 2.2 VImage Rejection >90 dBAdjacent Channel Rejection >60 dBIntermodulation Attenuation >50 dBBlocking >60 dBAudio Output Power1 kHz @ <1% distortion, peak power, @32 80 mW (per output)Minimum Load Impedance 16 Headphone output 3.5 mm (1.8") stereoNet Weight 196 g (6.9 oz.) (with batteries)Dimensions (H W D) 99 x 66 x 23 mm (3.9 x 2.6 x 0.9 in.)Battery Life 45.5 hours (continuous use) AA batteries5.57 hours (continuous use) SB900 Rechargeable Battery