The Acer H7550ST is a home cinema projector offering from Acer with a bright, high definition image but can also be used within business, meetings, training, etc. As a Full HD 1080p projector, the H7550ST will show Blu ray DVDs in their true form on a large screen. It can cope easily with large images, so if you want to have some friends round to watch the football or rugby then set it up on a coffee table and project onto the wall to get a big screen effect. As a short throw projector it is great if you are limited on space as you can place it close to the screen. If you are presenting then you will eliminate shadows on the screen and also you will not have glare shining into your eyes. With 3000 lumens, the H7550ST will be comfortable doing this during the day too – no need to turn the lights down or off to still get a clear image. The high contrast ratio of 16,000:1 will make dark scenes in movies and games look much defined with a brilliant level of greys and blacks. Multiple HDMI inputs will allow you to connect more than one HD device at a time for example a Sky+ box and an Xbox, and have the ability to switch between them without swapping cables around. It also has a 10W built in speaker for added audio. This will be powerful enough for personal use. For a large audience perhaps additional audio might need to be considered.