Give the performances youve always wanted to. Get precise and accurate in ear monitoring with an LD Systems U308 IEM T In Ear Monitoring Transmitter. The 100 meter transmission range means you can hear your sound in even the largest venues. Your sound couldnt be clearer. With a signal to noise ratio of over 90 dB and total harmonic distortion under 0.5% you can expect superb detail from any good sound source.