Zoom EXH-8

This turns your H8 into a 10 track recorder. It doesn't have phantom power built in so if you want phantom power on those channels you will have to connect a USB charger to the module. There's a USB micro-B connector for that on the topside of the module. That also means the X-Y microphones that come with the H8 can not be connected to this module. The channels will appear in the monitor of the H8 as EX1, EX2, EX3 and EX4. The build quality is very good eventhough it weighs very little and is made of plastic. It has a big extention at the bottom that goes under the main recorder to make sure nothing can wiggle around or move and the module is securely connected to the main recorder. I deducted one star because I think the price is a bit high and because it doesn't have phantom power built in but otherwise it's an excellent extention for the H8.