More audio input ports mean that more audio devices such as microphones and keyboards can be connected at once.
BenQ LW61ST: 4
16. audio output power
Audio output power is based on the number of speakers and their power in watts. High audio output power results in loud, clear sounds.
2 x 1W
Optoma EH501: 2 x 15W
17. power consumption operation
How much power the device consumes when it's switched on.
JVC DLA-X30: 0.8W
18. USB ports
With more USB ports, you are able to connect more devices.
Optoma UHD51A: 4
19. lamp life
This shows the lifespan of the light source. Beamers need to have their lamps (light source) replaced every now and then.
Vivitek Qumi Q7: 30000h
20. contrast ratio
Contrast ratio is the visual distance between the lightest and the darkest colors that may be reproduced on the display. A high contrast ratio is desired, resulting in richer dark colors and more distinctive color gradation.
Epson PowerLite Pro Cinema 6030UB: 600000:1
21. component ports
The more component ports a device has, the more devices can be simultaneously connected, such as video game consoles and set-top boxes.
BenQ MS504: 6
22. has a DVI connector
Devices that have a DVI connector (usually computers and notebooks) can be connected to the TV set.
13% have it
23. refresh rate
The frequency at which the screen is refreshed. Higher frequency results in less flickering (less noise) and more natural movement representation in action-intense scenes.
Panasonic PT-AE7000U: 480Hz
24. has stereo speakers
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
15% have it
25. composite ports
The more composite ports a device has, the more devices can be simultaneously connected, such as video game consoles and set-top boxes.