BenQ AK900ST vs Epson PowerLite L690SE

	BenQ AK900ST MSRP $5,999	Epson PowerLite L690SE MSRP $5,710
Key differences
White light output	6,000 lm ANSI	6,000 lm ISO
Native resolution	—	WUXGA (1920 × 1200)
Throw ratio	0.81–0.89:1	0.5–0.7:1
Lowest input lag	4.8 msDerived	—
HDR formats	HDR10, HLG	—
Fan noise	Normal 34 dB(A) · Eco 29 dB(A)	Normal 36 dB(A) · Eco 26 dB(A)
Price	MSRP $5,999	MSRP $5,710
Room fit80″100″120″150″
Distance to screen	1.8–2.0 m	1.1–1.5 m
Brightness
Rated brightness	6,000 lmDerived	6,000 lmDerived
White light output	6,000 lm ANSI	6,000 lm ISO
Colour light output	—	6,000 lm
Brightness uniformity	—	88%
Display system
Imaging technology	DLP	3LCD
Chip / panel diagonal	0.47 in	0.67 in
On-screen resolution	4K UHD (3840 × 2160)Derived	WUXGA (1920 × 1200)Derived
Native resolution	—	WUXGA (1920 × 1200)
Native aspect	16:9Derived	16:10Derived
Pixel shift	Yes (scheme not stated)	—
Addressable resolution	4K UHD (3840 × 2160)	—
Contrast
Dynamic contrast	3,000,000:1	Up to 5,000,000:1
Colour
Colour gamut	Rec. 709 97% coverage	—
Colour bit depth (per channel)	10 bit	—
Gamma / EOTF presets	2.2, 2.4, 2.6	—
HDR
HDR formats	HDR10, HLG	—
Light source
Light source	Laser (phosphor)	Laser (phosphor)
Light-source life	20,000 h normal · 30,000 h eco	30,000 h max · 20,000 h normal · 20,000 h eco
Life defined as	—	50% brightness
Light output control	Continuous	—
Cool-down time	About 15 s	—
Optics
Throw ratio	0.81–0.89:1	0.5–0.7:1
Image size	95–300 in	100–500 in
Zoom	Optical	Optical
Zoom ratio	1.1×Derived	1.4×Derived
Focal length	8.6–9.4 mm	7.54–10.55 mm
Aperture (f-number)	1.83–1.86	1.8–2
Focus	Motorised	Manual
Autofocus	Yes	—
Autofocus runs	On demand	—
Vertical lens shift	±60%	±50%
Horizontal lens shift	±23%	±20%
Motorised lens shift	No	No
Lens memory slots	5	—
Vertical keystone	30°	30°
Horizontal keystone	30°	30°
Auto keystone	Yes	—
Corner correction	4-corner	—
Grid warp	Yes	Yes
Auto setup	Fit to screen	—
Motion & gaming
Max input refresh	1080p: 240 Hz · 4K UHD: 60 Hz	—
Max refresh at 1080p	240 HzDerived	—
Max refresh at 4K	60 HzDerived	—
Input lag	1080p: 60 Hz 18.6 ms · 120 Hz 9.7 ms · 240 Hz 4.8 ms · 4K UHD: 60 Hz 18.1 ms	—
Lowest input lag	4.8 msDerived	—
Input lag at 4K 60 Hz	18.1 msDerived	—
Gaming features	ALLM	—
Inputs & control
HDMI inputs	2 × HDMI 2.1 (HDCP 2.3) · HDMI 2.1 (eARC, HDCP 2.3)	2 × HDMI (HDCP 2.3)
HDMI inputs (count)	3Derived	2Derived
Newest HDMI version	HDMI 2.1Derived	—
Other video inputs	—	HDBaseT
Max input resolution	4K UHD	—
Control ports	RS-232	RS-232
Control-system drivers	—	Control4, Crestron, AMX
Horizontal scan	15–270 kHz	—
Vertical scan	23–240 Hz	—
Smart platform
Ethernet	Yes	Yes
Casting	Miracast	—
Audio
Speaker power	20 W	—
Speakers	1	0
Layout	Mono	—
Audio outputs	3.5 mm	3.5 mm
HDMI audio return	eARCDerived	NoneDerived
Physical & installation
Dimensions (W × D × H)	521 × 351 × 166 mm	440 × 304 × 122 mm
Weight	10,200 g	9,299 g
Colours	—	White
Orientations	—	Table, Ceiling, Rear
Ceiling mount	M4	—
Dust filter	—	Replaceable
Ingress protection	IP5X	—
Environment & power
Operating temperature	0–40°C	0–45°C
Operating humidity	10–90%RH	20–80%RH
Altitude	3,000 m · high-altitude mode	3,048 m
Power draw	348 W	Max 432 W · Normal 432 W · Eco 313 W
Standby	Up to 0.5 W	0.3 W
Networked standby	Up to 2 W	2.4 W
Power supply	—	Built in
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Noise
Fan noise	Normal 34 dB(A) · Eco 29 dB(A)	Normal 36 dB(A) · Eco 26 dB(A)
Safety & compliance
Laser class	Class 1	Class 1
Risk group	RG2	—
Marks	—	FCC
Support & ownership
Warranty	3 yr	🇺🇸 US 3 yr · 🇨🇦 CA 3 yr
User manual	https://esupportdownload.benq.com/esupport/PROJECTOR%20FOR%20CONSUMER/UserManual/AK900ST/AK900ST_UM_EN_260915154537.pdf	https://download2.ebz.epson.net/sec_pubs_visual/eai/projectors/pdf/useg/EN/UsersGuide_EBL890E_EN_EAI.pdf
In the box
In the box	Power cord, Remote, Quick start guide, + User manual	Power cord, Remote, + Remote batteries, Quick start guide