Acer K138ST vs Asus P3B

(19)
Acer K138ST
Asus P3B

Top Prices

Newegg UK
MacMall
Delivery unknown
In stock
pricebreak-deals
Delivery unknown
In stock, only 2 left!
Newegg UK
Newegg US
Delivery unknown
Antonline
Delivery unknown

Reasons For

3 Reasons For
34% higher RMS rated power Edit
The Acer K138ST is a 3WW RMS rated power projector. That's 1W higher than the Asus P3B (2WW).
Two built-in speakers Edit
The Acer K138ST has two built-in speakers, however the Asus P3B only has one built-in speaker.
$39 cheaper
The Acer K138ST costs $39 less than the Asus P3B.
6 Reasons For
95% higher number of colours Edit
The Asus P3B is a 16.7MM colour projector. That's 15.7M higher than the Acer K138ST (16.7MM).
10h longer lamp service life Edit
The Asus P3B has a lamp service life of 30,000hh, however the Acer K138ST is only a 20,000hh lamp service life projector (10h shorter).
Two more USB 2.0 ports Edit
The Asus P3B is a three USB 2.0 port projector, whereas the Acer K138ST only has one USB 2.0 port.
Quieter noise level Edit
The Asus P3B is a 32dBdB noise level projector. That's 1dB quieter than the Acer K138ST (32dBdB). Read more

The noise level of the projector is the amount of noise that the projector makes (caused by the cooling fan inside the projector) when it is running.

A lower noise level means that the projector will be quieter when it is running. This means that you will be able to appreciate the quieter parts of films better without the background noise of the projector running.

3 shops are selling it
The more shops stock the product, the greater competition amongst shops to keep prices low.
Hugely better user reviews
The average user review score of the Asus P3B is 83% based on 14 reviews, but the average rating of the Acer K138ST is 20% (based on 1 review).

Reasons Against

7 Reasons Against
16x lower number of colours Edit
Acer K138ST is only 1,070MM colour, but the Asus P3B is a 16.7MM colour projector (15.7M higher).
50% shorter lamp service life Edit
The Acer K138ST is a 20,000hh lamp service life projector. That's 10h shorter than the Asus P3B (30,000hh).
Only one USB 2.0 port Edit
The number of USB 2.0 ports on the Acer K138ST is one, but the Asus P3B only has three USB 2.0 ports.
1dB louder noise level Edit
The Acer K138ST has a noise level of 33dBdB, however the Asus P3B is a 32dBdB noise level projector (1dB quieter). Read more

The noise level of the projector is the amount of noise that the projector makes (caused by the cooling fan inside the projector) when it is running.

A lower noise level means that the projector will be quieter when it is running. This means that you will be able to appreciate the quieter parts of films better without the background noise of the projector running.

Less retailers
Only 6 shops sells the Acer K138ST, whereas 9 retailers sell the Asus P3B. Read more
Smaller numbers of retailers reduces the price competition amongst retailers for this projector and also reduces the chances of the product remaining in stock.
Five months older
The Acer K138ST is older than the Asus P3B by five months.
Vastly Lower user review Score
The Acer K138ST's average user rating is only 20%, however the Asus P3B's is 83% (based on 14 reviews).
3 Reasons Against
1W lower RMS rated power Edit
The Asus P3B has an RMS rated power of 2WW, however the Acer K138ST is a 3WW RMS rated power projector (1W higher).
One less built-in speaker Edit
The number of built-in speakers on the Asus P3B is one, but the Acer K138ST only has two built-in speakers.
More expensive by $39
The Asus P3B is $39 more expensive than the Acer K138ST.

Awards

No awards found 2 Awards
profesionalreview.com: Gold
vido.com.ua: Recommended

Average Expert Rating

Average User Rating

Date Released

19 months Ago 15 months Ago

Projector

Contrast Ratio
 100000:1
 100000:1
Native Projector Resolution
 WXGA (1280x800)
 WXGA (1280x800)
Projector Brightness
800 ANSI lumens 800 ANSI lumens
Maximum Digital Resolution
 1920 x 1080
BEST
 1920 x 1080
Vertical Keystone Correction
-20 - 20 Unknown - Click to provide data
Matrix Size
Unknown - Click to provide data 0.45"
Minimum Vertical Synchronization
0.05kHz Unknown - Click to provide data
Maximum Horizontal Synchronization
100kHz Unknown - Click to provide data
Maximum Vertical Synchronization
0.12kHz Unknown - Click to provide data
Minimum Horizontal Synchronization
30kHz Unknown - Click to provide data
Number of Colours
1,070M 16.7M
BEST
Zoom Ratio
 Fixed
 Fixed
Projection Distance
0.4 - 1.7 0.45 - 3.4
Supported Aspect Ratio
 16:10
 16:9
 4:3
 16:10
 16:9
 4:3
Compatible Screen Size
25 - 100 25 - 200
Projection Technology
 DLP
 DLP
Supported Number of Colours Display
 1.073 billion colours
 16.78 million colours
 1.073 billion colours
 16.78 million colours

Lamps

Lamp
1 Unknown - Click to provide data
Service Life of Lamp in Economic Mode
30,000h Unknown - Click to provide data
Lamp Type
 LED
 LED
Lamp Service Life
20,000h 30,000h
BEST

Lens System

Optical Zoom
1x Unknown - Click to provide data
Throw Ratio
 0.8:1
 0.8:1
Digital Zoom
1.7x Unknown - Click to provide data
Focus Mode
 Manual
 Manual

Video

Graphics Resolution
 1920 x 1080 (HD 1080)
BEST
 1920 x 1080 (HD 1080)
Analog Signal Format System
 NTSC
 NTSC

Ports & Interfaces

Headphone Output
Unknown - Click to provide data 1
USB Connector Type
 USB Type-A
 USB Type-A
USB 2.0 Port
1 3
BEST
HDMI Port
1 1
VGA (D-Sub) Port
1 1
HDMI Port
 Full-size
 Full-size

Storage

Memory Card
 SD
 MicroSD (TransFlash)
 SD
 MicroSD (TransFlash)
Internal Storage Capacity
Unknown - Click to provide data 2GB

Performance

Noise Level
33dB 32dB
BEST
Noise Level in Economy Mode
29dB Unknown - Click to provide data
Vertical Scan Range
50 - 120 Unknown - Click to provide data
Preset Mode
 sRGB
 Dynamic
 Standard
 Theatre
 sRGB
 Dynamic
 Standard
 Theatre
BEST

Multimedia

Supported Audio Format
Unknown - Click to provide data AAC,APE,FLAC,MP1,MP2,MP3,OGG,WAV,WMA
Image Format
 JPG
 PNG
 BMP
 JPEG XR
 JPG
 PNG
 BMP
 JPEG XR
BEST
Video Format
 MP4
 WMV
 AVI
 FLV
 ASF
 3GP
 MOV
 MPG
 MKV
 VOB
 DAT
 M4V
 TS
 3G2
 MP4
 WMV
 AVI
 FLV
 ASF
 3GP
 MOV
 MPG
 MKV
 VOB
 DAT
 M4V
 TS
 3G2
BEST
RMS Rated Power
3W
BEST
2W
Built-In Speaker
2
BEST
1
Document Format
 PDF
 TXT
 PDF
 TXT

Design

Cable Lock Slot Type
 Kensington
 Kensington
Form Factor
 Portable
 Portable
Colour
 White
 White
Product Type
 Desktop projector
 Portable projector
 Desktop projector
 Portable projector

Power

Power Source
 AC
 Battery
 AC
 Battery
Power Consumption On Standby
Unknown - Click to provide data 0.5W
Typical Power Consumption
80W 65W
BEST
Power Consumption in Economy Mode
38W Unknown - Click to provide data
Power Consumption During PowerSave
38W Unknown - Click to provide data
AC Adapter Input Voltage
100 - 240 Unknown - Click to provide data
AC Input Voltage
 100 - 240
 100
 100 - 240
 100

Battery

Maximum Battery Life
Unknown - Click to provide data 1.5h
Battery Capacity
Unknown - Click to provide data 12,000mAh

Operational Conditions

Relative Humidity Operational Range
0 - 80 20 - 90
Operating Temperature Range
5 - 40 0 - 40

Certificates

Certification
Unknown - Click to provide data FCC, UL, CE, CB, CCC, CU, VCCI, PSE, RCM, TUV-GS

Weight & Dimensions

Packaging Weight
Unknown - Click to provide data 1.8kg
Packaging Height
Unknown - Click to provide data 80mm
Packaging Depth
Unknown - Click to provide data 255mm
Packaging Width
Unknown - Click to provide data 298mm
Weight
750g 750g
Height
Unknown - Click to provide data 43mm
Depth
Unknown - Click to provide data 131.2mm
Width
Unknown - Click to provide data 153.5mm

Packaging Content

Remote Control Type
 IR
 IR
Cable Included
 AC
 HDMI
 AC
 HDMI

Other Features

Audio Input
1 Unknown - Click to provide data
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