Hisense 40A4Q 40" VS Hisense 40A5Q 40"

At their core, both the Hisense 40A4Q and Hisense 40A5Q share the same foundational display DNA: a 1920 x 1080 (Full HD) resolution at 55 ppi on a 40″ panel, with identical contrast ratios of 5000:1, a 60Hz refresh rate, 9.5 ms response time, and wide 178° viewing angles in both directions. For everyday TV viewing at this screen size, these shared specs mean both sets will look comparably sharp and handle motion similarly.

The meaningful differences emerge in two areas. First, the A5Q uses QLED panel technology — a quantum-dot enhancement layer over the standard LED-backlit LCD found in the A4Q. This directly correlates with the A5Q's higher typical brightness of 230 nits versus the A4Q's 200 nits, a 15% advantage that translates to a punchier, more visible image in moderately lit rooms. Second, and arguably more impactful, the A5Q supports HDR10 and HLG, while the A4Q supports neither HDR format. HDR10 enables compatible streaming content and Blu-rays to deliver a wider range of light and shadow, and HLG is the broadcast HDR standard — meaning the A5Q can actually decode and render HDR signals where the A4Q simply cannot.

The A5Q has a clear display advantage. The QLED panel, brighter output, and HDR10/HLG support collectively make it the more capable screen, particularly for users who stream HDR content or watch HDR broadcasts. The A4Q is not a bad display for its class, but it lacks the tools to take advantage of higher-quality video signals that are increasingly common.

Both TVs share a reasonable connectivity baseline: dual HDMI ports, a single RJ45 ethernet port, Wi-Fi 4 (802.11n), Miracast screen mirroring, and a 3.5 mm audio jack — solid but unspectacular for this price tier. Neither offers Bluetooth, which rules out wireless headphones or speakers on both models without a third-party adapter.

Two differences are worth attention. The A5Q steps up to HDMI 2.0 versus the A4Q's HDMI 1.4 — a practically significant gap, since HDMI 2.0 supports 4K at 60Hz and, more relevantly here, properly handles the HDR10 signals that the A5Q's display can decode. The A4Q's HDMI 1.4 ports are bandwidth-limited and cannot pass HDR metadata correctly, which actually compounds the display disadvantage noted earlier. Additionally, the A5Q provides 2 USB ports compared to the A4Q's single USB port, giving more flexibility for simultaneous use of a USB drive and a peripheral like a keyboard or mouse. On the other hand, the A4Q's tuner supports a broader DVB standard set — including DVB-S and DVB-S2 (satellite) — while the A5Q is limited to DVB-T/T2 and DVB-C (terrestrial and cable only). For users without satellite reception this is irrelevant, but it is a real limitation for those who rely on it.

Overall, the A5Q has the connectivity edge for most users: its HDMI 2.0 ports and extra USB slot are broadly useful upgrades. The A4Q's satellite tuner support is a niche but genuine advantage for a specific subset of buyers — worth checking before deciding.

The audio profiles of these two TVs are closely matched: both run stereo speaker setups with no subwoofer, support Dolby Digital, Dolby Digital Plus, Dolby Audio, DTS:X, and offer a digital output for external sound systems. For a 40″ set in this class, that is a respectable codec foundation covering the most common streaming and disc-based audio formats.

The two points of divergence are output power and one key format. The A5Q delivers 2 x 8W versus the A4Q's 2 x 7W — a modest but real difference that contributes to slightly higher maximum volume headroom and a marginally fuller sound at the same volume level. More meaningfully, the A5Q adds Dolby Atmos support, which the A4Q lacks. In practice, the TV's stereo speakers cannot reproduce true Atmos spatial audio on their own, but Atmos support matters for pass-through: when connected to an Atmos-capable soundbar or AV receiver via HDMI or digital out, the A5Q can relay the Atmos bitstream intact, preserving the full audio experience that the source material was mastered with. The A4Q would downmix that same signal.

The A5Q holds the audio edge, primarily due to Dolby Atmos pass-through capability — a forward-looking advantage for anyone pairing the TV with an external sound system. The extra watt per channel is a minor bonus. For users relying solely on the built-in speakers, the gap is smaller, but the A5Q still nudges ahead on raw output power.

Across every design and physical specification provided, the Hisense 40A4Q and 40A5Q are identical: same dimensions (900 x 515 x 85 mm), same 5500 g weight, same volume, identical VESA mount support, and the same operating temperature range of 5–35 °C. There is no differentiator here whatsoever.

This is a complete tie. Buyers making a decision based on installation requirements, wall-mount compatibility, furniture fit, or portability will find no reason to choose one over the other from this data alone.

Feature-wise, these two TVs share a solid common ground: both are smart TVs with smartphone remote support, a search browser, sleep timer, child lock, identical 0.5W standby consumption, and a matching 3-year warranty. Neither offers a rechargeable remote or Apple HomeKit integration.

The two features where they diverge cut in opposite directions. The A5Q gains AirPlay support — a meaningful addition for households invested in Apple devices, enabling direct wireless streaming from iPhones, iPads, and Macs without needing a separate dongle or app workaround. The A4Q, meanwhile, supports USB recording, which allows users to record live broadcast content directly to an attached USB drive — a feature the A5Q omits entirely. For cord-cutters or users who rely on over-the-air and cable broadcasts, USB recording is a genuinely practical capability that removes the need for a separate PVR device.

Neither product has a clean overall win in this group — it comes down squarely to use case. The A5Q is the better fit for Apple ecosystem users, while the A4Q is more practical for users who want to record live TV. Buyers who use neither AirPlay nor USB recording will find both sets functionally equivalent here.