Home cinema, also commonly called premium or hi end home theatres, refers to home entertainment systems that seek to reproduce a movie theater like experience and mood using premium audio video equipment’s in or outside a private home. As of 2020, system users typically use a large high definition video projector or a large high-resolution flat-screen a movie or other video content from which is played on a Blu-ray player and other devices like media servers, DTH ( set top box ) and more similar devices with the audio augmented with five or more surround sound speakers with low-frequency self powered subwoofer.
The idea that you can move up to the high end equipment’s 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, subwoofers , 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.