Lightweight, portable yet powerful, the GR ONE series will surprise you with its incredible quality and power. The ONE series revisits and perfects the PURE SOUND philosophy, a fundamental characteristic of GR products. A 4-band equalizer will allow you to sculpt the sound according to your needs, but that's not all. You can choose 6 frequencies for the mids, while the deep and bright filters will allow you to add punch and/or definition to the equalization. Through the "PURE" switch, you can bypass the filters and equalizer to get a completely flat sound to combine, if necessary, with an external equalizer, a very useful feature when using different instruments in a concert. The 24-LED meter in 6 different modes (which can also be bypassed if necessary) also includes an extremely precise tuner mode, always active in "Mute" mode or activated during normal use by selecting it among the six available LED modes. The auxiliary input allows you to connect an external sound source (Tablet, Smartphone). The GR ONE's microphone preamp, recognized as one of the best, is perfect for professional use in both live and studio settings. At GR ONE 1400, we have two 700-watt power stages, each with independent volume control.