Audio-Technica M2L Wireless In-Ear Monitor System, Frequency Band L The M2 Wireless In-Ear Monitor System is designed to make professional in-ear monitoring features accessible for performers who want to be free from the problems associated with floor wedges. The stereo monitor system offers Personal Mix Control, which gives each musician volume and mix control of two independent signals on stage, via easy-to-use controls on the M2R stereo body-pack receiver. The wireless UHF M2T Stereo Transmitter provides a choice of 100 selectable frequencies and is equipped with two XLR/ combo input connectors into which users can connect line-level inputs. While up to 10 complete M2 systems may be used on stage simultaneously, any number of M2R stereo receivers may be used on the same frequency with a single M2T stereo transmitter. These rugged systems are built to stand up to the inevitable bumps of life on the road, delivering clear, natural sound for touring and installed-sound uses. Features: Band L: 575.000-608.000 MHz High-fidelity sound with clean, articulate mix allows you to hear yourself better at lower volume 100 selectable UHF channels Up to 10 simultaneous systems per frequency band Three receiver modes: Personal Mix, stereo, and mono Personal Mix Control allows volume and mix control of two independent signals at the receiver 3.5 mm line-in jack connects to ambient microphone, click track & more LED indicators provide easy-to-read level monitoring XLR loop output (true pass-through) connects signal to mixing console, additional IEM system or recording device with no signal degradation Adjustable squelch eliminates annoying static Pilot tone protects against RF interference when the transmitter is turned off Limiter (defeat able) helps protect your hearing from sudden peaks Portable system is quick to load and set up Reduces on-stage audio clutter for better overall mix & less feedback Use any number of M2R Stereo Receivers (with Personal Mix Control) on the same frequency Audio-Technical earphones with proprietary dynamic drivers offer full frequency response and outstanding isolation Personal fit with 3 sizes of rubber ear tips plus ear-conforming foam tips Auxiliary input offers connection point for ambient microphone, click track, or other mica- or line-level input. Specifications: Minimum Frequency Step: 25 kHz Modulation Mode: FM stereo Maximum Deviation: 40 kHz Dynamic Range: 90 dB (typical), A-weighted Total Harmonic Distortion: &lt;1% at (1 kHz, 20 kHz Deviation) Operating Range: 100 m (300'), typical. (Open range environment with no interfering signals.) Operating Temperature Range: -5 C (23 F) to +50 C (122 F) Battery performance may be reduced at very low temperatures. Frequency Response: 60 Hz to 13 kHz (+/- 3 dB) Simultaneous Use: 10 channels per band (maximum recommended) Receiving System: Double conversion superheterodyne RF Sensitivity: 20 dub (at 60 dB S/N ratio, 50 ohms termination) Headphone Output Connector: 3.5 mm TRS stereo phone jack Headphone Output Power: 65 maw (at 32 ohms) Antenna Input: SMA-type, 50 ohms Aux Input Connector: 3.5 mm TRS stereo phone jack Batteries: 2 x 1.5V AA (not included) Battery Life: 8 hours (alkaline), Depending on battery type and use pattern Dimensions: 70.0 mm (2.76") W x 25.0 mm (0.98") D x 110.0 mm (4.33") H Net Weight: 110 g (3.9 oz.), without batteries Accessories Included: EP3 earphone; frequency sticker; flexible antenna RF Power Output: 10 maw/30 maw (switchable internally), 50 ohms, Limited to 10 maw within 863 MHz to 865 MHz, Following national regulations Spurious Emissions: Following federal and national regulations Input Connections: XLRF-type/6.3 mm stereo (1/4") combination connector, Pin 1 and Sleeve: Ground, Pin 2 and Tip: Hot, Pin 3 and Ring: Cold Maximum Input Level: XLRF-type/6.3 mm stereo, (1/4") balanced: +26 dB 6.3 mm (1/4") mono, unbalanced: +26 dB Loop Output Connector: XLRM-type connector, Pin 1: Ground, Pin 2: Hot, Pin 3: Cold Power Requirement: 12-18V DC, 600 mA Antenna: Attached whip Dimensions: 210.0 mm (8.30") W x 132.0 mm (5.20") D x 44.0 mm (1.70") H Net Weight: 870 g (30.7 oz.), without accessories Accessories Included: AC adapter (country dependent); rack mount adapters