Staco Energy Products will features the UniStar C series single-phase online Uninterruptible Power Supply at NAB 2009. The 1, 2 and 3-kVA rack-mount models include hot-swappable batteries, a powerful internal battery charger, emergency shut-down and programmable receptacles. Each UniStar C features PWM sine-wave topology for better performance. The high crest factor of the inverter handles all high in-rush current loads without the need to upgrade the power rating. The DC-start function ensures that the UPS will start even during a power outage. An easy-to-read user friendly LCD display gives you real-time indication of all major system parameters and status, including load level, battery remaining and fault signals. $900 ‘ $1,900 (range depending on configuration). www.stacoenergy.com.