The dbx 1231 Dual-Channel 31-Band Graphic Equalizer CG01VZD is a professional-grade signal processor designed for audio professionals in the music industry. With its dbx brand reputation and high-quality construction, this unit boasts dual channels and 31 bands for precise graphic equalization control. Perfect for adjusting sound levels and frequencies, the dbx 1231 is a versatile tool for achieving optimal sound quality in various audio settings.