
4K Blu-ray fans, listen up! Amazon has discounted a load of 4K Blu-rays as part of its Spring Sale, and there are some seriously good titles on offer.
4K Blu-ray is the best way to experience your favorite movies at home, and it's a source we use for testing the best TVs and best soundbars week in and week out. As a 4K Blu-ray fan, this is easily my favorite section of the Amazon Spring Deal Days sale.
• View the full Amazon Spring Deal Days sale
While there is an excellent selection of movies on sale, I've picked 6 of my favorite discs I could find scouring through the discounts. As a bonus, all of these have featured in our Blu-ray Bounty feature, where we look at the very best 4K releases each month.
Featured are two musicals with striking visuals and iconic soundtracks: The Sound of Music and The Rocky Horror Picture Show, the former of which has now become a reference disc for my TV testing.
Want an action-packed blockbuster? Then The Fantastic Four: First Steps should more than satisfy, with its crisp picture and meaty Dolby Atmos soundtrack. Or if you're after a methodically paced, contrast-rich movie with tons of atmosphere, then there's not much better than Se7en.
Finally, if you want to see what 4K can do for older movies, The Warriors' gritty aesthetic looks revitalised, or there's the colourful world of Tron (1982). Both these 4K discs have given these movies a much-needed facelift.
The best 4K Blu-rays on sale at Amazon
The Sound of Music

Easily one of the best-looking 4K discs I've ever seen, The Sound of Music blew me away with its vibrant colours and beautifully cleaned-up detail, and it's since become one of my go-to testing discs. The market scene in particular is a feast for the eyes!
The Dolby Atmos mix of the legendary soundtrack is spacious, soaring, and delivered with stunning clarity. This will sound fantastic through your home theatre's sound system.
Se7en

Se7en has really benefited from the 4K treatment. Textures look crisp and lifelike, and contrast is powerful, with rich black tones that will really shine on the best OLED TVs.
The DTS-HD 5.1 MA soundtrack accurately delivers the tense, string-laden score without interfering with speech. It even does a great job creating a sense of overhead sound with the rain, despite a lack of height channels in the mix.
The Rocky Horror Picture Show

Another movie given new life by 4K, The Rocky Horror Picture Show, looks excellent. From the eye-popping colours to the refined textures of the sometimes garish costumes, it's a seriously good-looking disc.
The Dolby Atmos soundtrack does wonders for The Rocky Horror Picture Show. Iconic songs like 'Time Warp' and 'Sweet Transvestite' are bright, brash, and punchy, with every instrument and vocal given room to breathe. This is how the movie's soundtrack was meant to be heard.
Tron (1982)

While its CGI visuals may now look a bit dated, there's a charm to Tron that's really aided by the fantastic 4K restoration. Colours are bold, textures are refreshed, and even the CGI parts have a new level of detail. Real-world sequences also look fantastic, taking on a 3D-like appearance.
Featuring a Dolby Atmos soundtrack, Tron sounds great. The light cycle scene is perfect for showcasing the sound mapping of your home theatre setup, while the synth-laden score sounds wonderfully bass-heavy throughout.
The Fantastic Four: First Steps

You won't be shocked to hear that The Fantastic Four: First Steps looks superb in 4K. Exactly as you'd expect from a modern 4K disc, textures are gorgeous, with real detail in the Fantastic Four's outfits. At the same time, colours are striking and vibrant, with the 1960s aesthetic delivered beautifully.
Whether it's crunching fight scenes, big explosions, or the Human Torch soaring overhead, The Fantastic Four: First Steps' Dolby Atmos soundtrack is everything you could want to let your home theatre flex its muscles.
The Warriors

Blending the bold colours of the various gangs' uniforms with the contrast-rich, sometimes bright 1970s New York environments, The Warriors looks brilliant in 4K. Textures have been cleaned up nicely, so even the grimiest subway station looks true-to-life.
While this Paramount version may not feature the Dolby Atmos soundtrack of the Arrow Video 4K, the 5.1 mix included here still delivers fine detail, great impact in fight sequences, and does justice to its song list.