The Senal PMC-II Passive Monitor Controller is a professional-grade controller designed for monitoring audio levels in a studio setting. With a corded electric power source and button controller type, this model features passive technology and connectivity options including TRS and XLR. Perfect for use with computer speakers, the Senal PMC-II offers reliable and precise audio control for musicians, audio engineers, and other professionals in the music industry. Ideal for a variety of monitoring applications, this controller from Senal is a high-quality and versatile tool for any studio.