The Google Pixel 9a supports HDR but does not specifically mention support for Dolby Vision. It is capable of displaying HDR content with a peak brightness of up to 2,700 nits and typical HDR brightness of 1,800 nits[3][6]. However, the display has a limited 8-bit color depth, which is typical for HDR10 support rather than the more advanced Dolby Vision format, which often requires a higher bit depth like 10-bit or 12-bit[3][8]. Dolby Vision is a more advanced HDR format that offers dynamic metadata, which is not mentioned in the specifications of the Pixel 9a. Therefore, it is likely that the Pixel 9a supports HDR10 rather than Dolby Vision.
In general, Dolby Vision support is more common in higher-end devices or those specifically designed for advanced video playback. The Pixel 9a, being a mid-range model, focuses on providing a good balance of features at an affordable price, which might not include Dolby Vision support.
For users interested in Dolby Atmos audio, the Pixel 9 series does support it, but the decoding happens on the device rather than the headphones[5]. However, this does not directly relate to the display's HDR capabilities.
Citations:
[1] https://www.pcmag.com/comparisons/google-pixel-9a-vs-pixel-9-whats-the-difference
[2] https://store.google.com/product/pixel_9_specs
[3] https://www.gsmarena.com/google_announces_pixel_9a_with_tensor_g4-news-67027.php
[4] https://www.thurrott.com/mobile/android/google-pixel/310355/google-pixel-9-pro-xl-review
[5] https://www.reddit.com/r/GooglePixel/comments/1go4w9a/no_dolby_atmoshead_tracking_support_on_pixel_9/
[6] https://www.androidcentral.com/phones/google/google-pixel-9a-hands-on
[7] https://www.theverge.com/news/631826/google-pixel-9a-specs-price-availability
[8] https://en.wikipedia.org/wiki/High-dynamic-range_television
[9] https://www.businessinsider.com/guides/tech/google-pixel-9a-hands-on-price-release-date-features-specs
[10] https://www.pcmag.com/news/i-took-the-499-google-pixel-9a-for-a-spin-heres-what-i-like-most
[11] https://cybershack.com.au/reviews/google-pixel-9-9-pro-and-9-pro-xl-a-very-deep-dive-review-smartphone/
[12] https://www.androidpolice.com/pixel-9a-spec-sheet-leak/