Home cinema, also commonly called home theater or home theatre, refers to home entertainment systems that seek to reproduce a movie theater experience and mood using video and audio equipment in or outside a private home. As of 2015, system users typically use a large projected image from a video projector or a large flat-screen high-resolution HDTV screen, a movie or other video content on a DVD or high-resolution Blu-ray disc, which is played on a DVD player or Blu-ray player and other devices like media servers, Dth ( set top box ) and more with the audio augmented with five or more surround sound speakers and a low-frequency subwoofer.
The idea that you can move up to the high end when you're buying components and setting up a home theater may see a little vague to you. Everyone's got his or her own definition of high end, but it can mean equipment that is designed to offer the ultimate reproduction of music and movies.
The designers of high-end systems are so single-minded in their pursuit of musical and video fidelity that they create their own proprietary systems that they feel do a better job than standard integrated systems.
High end starts and ends with the philosophy of the designers and engineers who create the product (which can be speakers, a display, an A/V controller or power amplifier, or even an A/V receiver, though high-end systems usually go with separates). See, anybody designing a piece of consumer electronics equipment has to balance a lot of different (and often conflicting) requirements: price, aesthetic considerations, size, performance, its ability to work with other gear, and so on. High-end gear skews this very delicate balance toward the performance side of the equation, and as a result, the high-end components can be much more mind blowing and immersive experience.
It's not just the audio part of home theater that fits into the high-end category. You can find high-end video systems out there on the market, waiting to be gobbled up by well-to-do home-theater enthusiasts.