Nipros Products › VHD-410 VHD-410 $499.00 Sold Out 1x4 12G-SDI Re-Clocking Distribution Amplifier w/ 4pin XLR + DC Barrel Redunant Power Inputst & Dual-Polarity Operation Sold Out Added! 1x4 12G-SDI Re-Clocking Distribution Amplifier w/ 4pin XLR + DC Barrel Redunant Power Inputst & Dual-Polarity Operation