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Acer K138ST

alaTest has collected and analyzed 6 reviews of Acer K138ST. The average rating for this product is 3.1/5, compared to an average rating of 4.2/5 for other Projectors for all reviews. Reviews about the reliability and size are overall positive. Many are negative about the noise and price.

usability, size, reliability

image quality, price, noise

We analyzed user and expert ratings, product age and more factors. Compared to other Projectors the Acer K138ST is awarded an overall alaScore™ of 92/100 = Excellent quality.

Review analysis

(Based on 6 reviews)

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Consumer review by: ( review summary for Acer K138ST


alaTest has collected and analyzed 1 user review of Acer K138ST from The average user rating for this product is 1.0/5, compared to an average user rating of 4.3/5 for other Projectors on There are some critical views about the price and image quality.

image quality, price

0% of the reviews on give this product a positive rating.

This summary is based on the products: Acer K138ST 3D Portable Projector, WXGA, 800Lm, 100.000/1, HDMIAcer K138ST 3D Portable Projector, WXGA, 800Lm, 100.000/1, HDMI

Sep, 2017

Expert review by: Tony Hoffman (

Acer K138ST


The LED-based Acer K138ST has a relatively short throw distance and can project content from a smartphone via its MHL-enabled HDMI connection.

Compact. Lightweight. Can project content from a smartphone. Long lamp life. Short throw distance. Comes in soft carrying case.

Limited connection choices. Rainbow effect in video. Scaling artifacts visible at projector's native resolution.

Conclusion The Acer K138ST is compact and easily portable, and it has a relatively short throw for an LED projector, so you can position it close to the screen, and you can also display content from a smartphone attached to its MHL-enabled HDMI port....

Mar, 2016

Expert review by: Alex Hernandez (

Acer K138ST Projector review: A decent LED home projector


Projectors have multiple use applications from the office to a home theater, and the Acer K138ST is capable of living in multiple worlds. With a strong LED lamp and a 1280×800 resolution, this projector should fall into just the right spot for some...

Compact and portable. Nice carrying case included. Easy setup and easy to use

Speakers are weak, price point may be strong for a 720p projector

This is a nice projector for office or home use and great if you're not concerned with having full HD. Speakers are weak and we'd recommend external means for sound.

Jun, 2016

Product Specifications

Ports & interfaces

HDMI connector type:Full-size


Horizontal synchronization (max):0.1 / 100
Horizontal synchronization (min):0.03 / 30
Native Aspect Ratio:16:10
Number of Colours:1.073 billion colours
Projector native resolution:WXGA (1280x800)
Supported aspect ratios:4:3, 16:10, 16:9 / 4:3, 16:9
Vertical synchronization (max):0.12
Vertical synchronization (min):0.05