Buy Dante AV Ultra Encoder with12G-SDI and HDMI Input DAV-01ST online at Qvest Store New Zealand. ADTECHNO Dante AV Ultra Encoder – DAV-01ST is the award-winning AV over IP product, powered by the Dante AV Ultra solution, allowing for lossless 4K Ultra HD video and extremely low-latency IP streaming over 1GbE network.