Panasonic VIERA AX902 vs Sony BRAVIA HX923

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VIERA AX902 compared with BRAVIA HX923

	PanasonicVIERA AX902	SonyBRAVIA HX923
Overview
Released
Released	2014	2011
Display
Panel
Panel	LED LCD	LED LCD
Panel detail
Panel detail	Panasonic specifies an LED LCD panel with Local Dimming Ultra. AVForums identifies the reviewed 55-inch panel as IPS with full-array direct backlighting and 128 zones; that zone count is not claimed for the 65-inch size. Panasonic's 3000 Hz Backlight Scanning claim is not a native refresh rate.	Sony's OptiContrast LCD with Gorilla Glass, Intelligent Peak LED backlight and local dimming. AVForums and HDTVTest describe the UK 46-inch sample as full-array local dimming; Home Cinema Choice calls its 55-inch unit edge lit, so the backlight layout is recorded as a source conflict rather than a series-wide fact.
Resolution
Resolution	3840 × 2160 (4K) (better)	1920 × 1080 (Full HD)
HDR formats
HDR formats	None	None
Picture processing
Picture processing	Studio Master Drive, Local Dimming Ultra, Studio Master Colour, 4K Pure Direct and Intelligent Frame Creation Pro. The 55-inch zone count is reported by AVForums, not the UK manual.	Sony X-Reality PRO, Live Colour, Advanced Contrast Enhancer and 24p True Cinema. Active shutter 3D is built in.
Picture modes
Picture modes	Dynamic, Normal, Cinema, THX Cinema, THX Bright Room, True Cinema, Monitor, Custom, Professional 1 and Professional 2; BT.1886 gamma is available.	–
Motion handling
Motion handling	HDTVTest found clear motion with Intelligent Frame Creation enabled but mild 24p judder; AVForums preferred turning interpolation off for films.	Sony UK lists 200 frames per second and Motionflow XR 800 for the 55-inch model; XR 800 is a processing label, not a native panel rate. A consistent native rate across all UK sizes was not verified.
Viewing angle
Viewing angle	The reviewed 55-inch IPS panel retained contrast and colour better off-axis than many contemporary VA LCDs according to HDTVTest.	AVForums and Home Cinema Choice both found the picture loses contrast off-axis on their tested 46 and 55-inch samples.
Sizes
Sizes
Sizes	55, 65″	46, 55, 65″
Largest size
Largest size	65″	65″
Gaming
HDMI ports
HDMI ports	4 (0 HDMI 2.1 at 4K 120 Hz+)	4 (0 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rate
Variable refresh rate	None	None
HDMI detail
HDMI detail	Four HDMI inputs support 4K and 3D; HDMI2 supports ordinary Audio Return Channel. The UK manual also lists DisplayPort for 4K, one SCART, component and composite inputs, CI+ and an SD card slot. HDTVTest confirmed full HDMI 2.0 bandwidth and HDCP 2.2 on the reviewed 55-inch unit.	Four HDMI inputs, including two on the side; HDMI 1.4-era signal support, with no HDMI 2.1 features.
Game features
Game features	–	Game picture mode; no VRR.
Input lag
Input lag	AVForums measured 90 ms in Game mode on the 55-inch set; HDTVTest measured 87 ms on its separate 55-inch sample.	–
Smart TV and sound
Smart TV platform
Smart TV platform	my Home Screen	Sony Entertainment Network
Processor
Processor	Quad Core Pro5	X-Reality PRO
Speakers
Speakers	18 W	30 W (better)
Wi-Fi
Wi-Fi	Built-in dual-band IEEE 802.11a/b/g/n	Built-in Wi-Fi
Bluetooth
Bluetooth	Bluetooth 3.0 for accessories	–
Speaker detail
Speaker detail	Panasonic specifies 4 W + 4 W stereo drivers and a 10 W woofer.	Sony UK lists 30 W total, 10 W × 3, for its 55-inch model. The optional Monolithic stand with speakers is a separate accessory.
Audio features
Audio features	3.5 mm headphone socket and Bluetooth accessory support.	–
Casting
Casting	Panasonic's my Home Screen platform supports network media, TV Anywhere, screen mirroring and streaming apps; service availability varies over time.	DLNA playback and Sony internet video services; Chromecast is not supported.
TV tuners
TV tuners	UK DVB-S/S2 Freesat, DVB-T/T2 Freeview HD and PAL I analogue tuners; two satellite dish inputs.	Sony UK lists DVB-T/T2 terrestrial and DVB-C cable tuners plus analogue reception for the 46 and 55-inch sets.
USB
USB	Two USB 2.0 ports and one USB 3.0 port support media and recording to a registered drive; SD card slot.	Two side USB inputs; media playback and USB HDD recording, the latter after firmware update according to Sony UK.
Ethernet
Ethernet	RJ45 10/100/1000 Ethernet for network services and local sharing.	One Ethernet input.
Optical audio out
Optical audio out	Fibre-optic PCM, Dolby Digital and DTS output.	One rear optical digital audio output.
Design and power
Size
Size	TV only: 55-inch 1238 × 741 × 59 mm and 26 kg; 65-inch 1457 × 864 × 60 mm and 35 kg. With pedestal: 55-inch 1238 × 740 × 283 mm and 40 kg; 65-inch 1457 × 863 × 356 mm and 52 kg.	Without stand (W × H × D), Sony UK sheets: 46″ 1081 × 660 × 38 mm; 55″ 1278 × 771 × 38 mm. Configuration weights also exclude stands. Exact 65-inch dimensions and weight are omitted.
Stand
Stand	Supplied rear-weighted pedestal. Panasonic lists 400 × 400 mm wall mounting holes.	Central swivel stand; the optional Monolithic Design audio stand was sold separately.
Power use
Power use	Panasonic product fiche on-mode average: 210 W for 55 inches and 229 W for 65 inches; 0.30 W standby and off mode for both.	Sony UK lists 113 W home-mode operation and 190 W rated for the 55-inch model; 157 kWh annual label use.
Energy class
Energy class	C for UK 55-inch and B for UK 65-inch under the historical Panasonic product fiche.	–
Colours
Colours	Black glass front with silver edge trim.	–
In the box
In the box	Standard and touchpad remotes, two pairs of passive 3D glasses, pedestal, mains lead and instructions. Panasonic's 2014 UK model list and manual confirm 55- and 65-inch AX902B sets; the distinct 85-inch TX-85X942B is excluded. Exact first-sale month remains unconfirmed; contemporary UK coverage places availability in November 2014.	Sony UK lists two TDG-BR250 active 3D glasses, RM-ED041 remote, two AAA batteries and attached power cable for the 55-inch model.