The VDA-106-3GS1 x 6 3G/HD/SD-SDI Reclocking Distribution Amplifier by Marshall Electronics is a high-quality amplifier designed for professional audio applications. With the ability to distribute 3G, HD, and SD-SDI signals, this amplifier is perfect for musicians, recording studios, and live event setups. Its single channel design ensures clear and powerful sound reproduction, making it a reliable choice for enhancing audio quality in various settings. The VDA-106-3GS1 x 6 is a versatile and top-notch amplifier that can help elevate your audio experience.//unit its PREOWNED missing power adapter///