The Samson D-2500 Dual 31 Band EQ is a professional-grade rack mountable equaliser designed for audio professionals in the music industry. With two channels featuring XLR input/output ports, this analogue device offers graphic equalisation capabilities for precise audio tuning. It also includes feedback reduction features and presets for added versatility. Made by the reputable brand Samson, this unit is a reliable choice for enhancing and mastering sound quality in a studio setting. COMES WITH POWER SUPPLY UNIT ONLY, REF: CD_20.