BLX Wireless System * Simple operation for easy use. * Employs patented ARC audio compression technology. Delivers sound faithful to the original, comparable to wired microphones. * Allows simultaneous use of up to 6 frequencies in the B band. ※ The maximum number of usable channels is the maximum number of channels that can be used simultaneously when only the same series is used, with no frequency interference from other wireless products. When using Shure's other series of wireless products or other companies' wireless products simultaneously, the number of usable channels may be significantly reduced. ■ Radio wave range: Up to 60m during normal use, up to 90m in the best environment ※ When used outdoors with a clear line of sight. Varies depending on the usage environment. ■ Frequency response: 50Hz～15kHz (The bandwidth of the entire system varies depending on the microphone head) BLX4 Single Wireless Receiver * "QuickScan" function with one-touch operation quickly detects the best frequency. ■ Receiving frequency: B band (806~810MHz) Any one channel out of 26 channels ■ Audio output connectors: XLR pin, male (balanced), phone jack (instrument output: unbalanced) ■ Impedance: XLR: 200Ω, Phone jack: 50Ω ■ Output level: XLR: -27.5dBV, Phone jack: -13dBV ■ Power supply: DC12~15V, 160mA, AC adapter included (AC100V, 50/60Hz) ■ Dimensions: Width 178 x Height 37.5 x Depth 103mm ■ Weight: 204g BLX2 Handheld Transmitter (BETA 58A microphone head) * Up to 14 hours of continuous use with 2 alkaline batteries. * Equipped with an ON lock function for the power switch and a channel setting lock function to prevent misoperation. ■ Type: Dynamic type ■ Directivity: Supercardioid ■ Frequency response: 50Hz～16kHz ■ Maximum input level: -10dBV (when gain adjustment [-10dB]) ■ Dimensions: Maximum diameter 53 x Total length 250mm ■ Weight: 264g