Glensound SPARK 2 Sub Compact Single User Commentary With 2 Talkback ChannelsThe Spark is the most technically proficient commentary or announcers interface available, from such a small design. For applications where desk space is at a premium, but quality and features are still paramount, Glensound proudly introduce the Spark. Spark 2 With 2 talkback channels and monitors Glensound Grade Mic Amp The Spark includes the highly regarded Glensound Grade mic amp system. This results in a clean audio input without distortion or