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ASUS S1 Projector ASUS S1
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Street Price: $239
Weight: 0.8 lbs
Aspect Ratio:16:9
Lens Shift:No
Lamp Life:30,000 Hrs
30,000 (eco)
Connectors:  HDMI (MHL), Audio Out, USB
Video Formats:  480i, 480p, 720p, 1080i, 1080p/60, 1080p/50, 576i, 576p

Pocket Projector Review

Marc Davidson, May 15, 2014


I've already touched on all of the S1's limitations worth mentioning. All but one are typical for this category of projector.

No zoom. Like most small projectors, the S1 lacks a zoom lens.

Apparent scaling artifacts. As with all projectors with a similar DLP chip design, the S1 shows apparent scaling artifacts even at its native resolution.

Rainbow artifacts. As with the vast majority of DLP projectors, the S1 shows occasional rainbow artifacts.

Limited connection choices. You can only use image sources that can connect to an HDMI port.


The ASUS S1 sits in a comfortable niche between competing pocket projectors that are similarly portable but not as bright, and 300- and 500-lumen models that are brighter, not as portable, and more expensive. Unfortunately, if you need to use an image source that can't connect to an HDMI port, it's useless. But if HDMI will work with everything you need to connect to, the S1 delivers a winning balance of image quality, portability, brightness, sound quality, volume, and price. That's more than enough to make it an attractive choice.

Previous Page
Features and Test Results
Review Contents: Viewing Experience Set Up Features and Test Results Conclusion

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Comments (9) Post a Comment
Claude Posted May 29, 2014 2:22 PM PST
I thought LED lighting eliminated the rainbow effect ? Is that not correct ?
Evan Powell, Editor Posted May 29, 2014 2:36 PM PST
Claude, that is not correct. Sometimes it can make it worse. The LED light source functions by alternating red, green, and blue in temporal sequence, just like a color wheel does, and that's what causes the problem.
Wayne Posted Jun 2, 2014 8:46 AM PST
I'm interested in the reviewer's discussion of brightness and the term "moderate ambient light". Does that mean it can be used in hotel hallways outside conference rooms? The lighting in such places is softer than office lighting, but certainly not "theatre dark".

If I'm showing slides on the wall outside the conference room, for people to glance at as they arrive, will they see something useful?

Given the above, I'm disappointed that the projector doesn't have connectivity for USB thumb drives, SD cards or WiFi.

Does anyone have suggestions for a projector that's bright enough and better connected?

Ignacio Posted Jun 6, 2014 9:01 AM PST
I've had a brookstone hdmi projector for 2 years now, it's a great little projector that has served me great but I am looking for an upgrade within the same dimensions. I certainly welcome the added lummens but I wonder if there is a projector this size with 720p resolution? Also can you comment of the fan noise compared to the brookstone?
Tim Thompson Posted Jun 17, 2014 7:50 PM PST
Does it have a fan? How noisy is it?
Dare Posted Oct 14, 2014 10:31 PM PST
The asus S1 has no built-in wireless connectivity however, I saw a video on youtube that demostrated how it can be used with an ASUS wireless dongle plugged into its HDMI port.

Does anyone know which dongles are compartible with it? I'll really like to be able to connect my laptop and phone to it wirelessly for ease.
Greg Green Posted Dec 17, 2014 10:05 AM PST
What resolution do I need? I have the projector and all it is showing is the desktop background. Nothing else shows up.
Samuel Onyiego Bosire. Posted Nov 2, 2015 7:33 AM PST
I bought Asus S1 pocket projector. I connected it to my laptop using the HDMI cable, it doesn't show any picture, just writes NO SIGNAL. What might be the problem?.
Evan Powell, Editor Posted Nov 2, 2015 7:48 AM PST
Samuel, typically it is because your laptop does not automatically output a video signal via HDMI until you tell it to in the display settings.

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