With 1 channel and 10 bands, this item is perfect for the general shooter, and is available in fraction of the cost of our other, more advanced models. An advanced compression circuitry is built in to reduce the annoying hiss shooters hear in the field, and a passive noise reduction of +/-25 NRR lets you control your environment and senses. In addition, shooters can use their own hearing tests to custome tune ESP's Elite Digital in order to best fit their ears.