GAOMON S620 Review

Edit (Apr. 26, 2019): GAOMON’s most recent posts about this tablet on their Facebook page is apparently advertising Android support on this tablet.
My unit, however, was bought before they announced Android support, so it does not come with an Android adapter for the cable. Because of this, my review will not go over this tablets android functionality whatsoever.

The GAOMON S620 is a new GAOMON tablet which competes in the small (~6×4 inch) tablet category. It offers a battery-free pen with a relatively low retail price of ~35-40 USD on AliExpress, which is the only place I can currently find it being sold officially by GAOMON. Edit: It is now officially released on Amazon.

I bought this tablet through AliExpress because it had a fairly ridiculous sale coupon available for it which gives you 13 USD off the S620 specifically (it’s still available while I’m writing this review), and it was also on sale for 35 USD from it’s original 40 USD price in addition to the coupon. I also used an AliExpress first time buyer 2 USD coupon.
So in total, it just cost me a little over 20 USD!

If I am honest, my expectations for this tablet were fairly high considering I had noticed that GAOMON uses altered Huion drivers for their tablets (and Huion drivers are quite good overall).
However, as usual, my expectations were a bit too high and the GAOMON S620 turned out to be just a “decent” tablet if anything. I could argue it’s pretty good for a 20 USD tablet, but I don’t think I would recommend it at its normal retail price of 40 USD.

Anyways, that’s enough introduction. Onto the review!

P.S. You may notice that this review is done with a slightly different format compared to my previous reviews. This is because I am cleaning up my review methodology to include some more pen tests. I hope to update my other recent reviews to include these tests as soon as I can as well.

Please note!
-I am not a Mac or Linux user!! I mainly only tested this tablet on Windows 10 version 1803.
-Prices may have changed since I wrote this review.
-Check when a review was written. Some aspects may improve or change over time, so it is in your best interest to concentrate on reviews which are less than 1 year old.
-Always check multiple reviews to cross reference their information before you make a conclusion about a tablet.

Table of Contents

How good is this tablet?

Design choices: Pretty good!
-Nitpicks: Button placement
Hardware quality: Not fantastic, but not bad.
-Nitpicks: Plastic-y texture
Tablet drivers: Very good!
-Nitpicks: Auto-startup
Drawing test results: Decent, but lacking.
-Nitpicks: High IAF (Initial Activation Force)
Actual drawing experience: Usable, but not pleasing.
-Nitpicks: High IAF

Overall: A pretty good tablet for 20 USD, but lacking at 40 USD.

My verdict:
I would probably only recommend this while it has the 13 USD off coupon available for it on AliExpress (look here for coupon), and even then, only to the people who really can’t afford anything over ~20 USD.
At its actual retail price of 40 USD, the high initial activation force makes it lose out to other options like the XP-Pen G640/G640S and Huion H640P.

Specifications at a glance

Price: 39.99 USD (when this review was written)
Active Area: 6.5 x 4 inches

Pen Type: Battery-free
Pen Buttons: 2 side buttons, no eraser
Pen Pressure: 8192
Pen Tilt Sensitivity: None
Shortcut Keys: 4 buttons
Multi-touch: No
Other features: Android compatibility (?)

What’s in the box?

2 - Box

The tablet comes in a really simple white box with just the GAOMON logo in the middle and the name of the tablet in the corner. I admit that I actually really like this kind of box design, so it gave me a good impression when I first saw it.

3 - Contents

The things that come in the box:

  • GAOMON S620 tablet
  • GAOMON Artpaint AP32 battery-free pen
  • Felt pen pouch
  • Tablet cable (USB type-A to Micro-USB)
  • Pen nib replacements x8
  • Anti-fouling glove
  • User manual
  • Driver installation instruction card
  • Warranty card

4 - Tablet Overall

The tablet has a fairly simple design with the textured drawing area covering most of the front surface of the tablet. The tablet itself is very compact and small.
I noticed that any hand oils you get on the tablet are very noticeable.

There is some flex when doing a simple twist test by gripping both ends of the tablet and twisting, however, the tablet does not creak at all which means that the pieces are properly built and fit snugly together.

5 - Tablet Texture

The surface of the tablet has a decently rough finish to it to imitate a paper-like feeling. Unfortunately, you can clearly feel that the texture is more plastic-y than paper-like, so you probably won’t enjoy it if you were expecting a “like paper” experience.

However, with that said, it is not particularly bad and is completely usable, it’s just more on the plastic-y side if anything.

6 - Tablet back

The back of the tablet has 4 round rubber feet and the usual information sticker. The rubber feet did their job properly and prevented the tablet from moving around while I was drawing.

The dotted design may not be for everyone, but I didn’t notice it until I started taking pictures since you don’t see the back when drawing on the tablet.

7 - Tablet Edge

The front edge of the tablet is slightly beveled.

I appreciate this beveled design choice because a lot of screen-less tablets now have non-beveled edges (they’re just cornered edges), and I find those ones uncomfortable to work on for longs periods of time because they dig into my wrists the way I rest my arm on my tablets while drawing.

8 - Tablet Buttons

The tablet has 4 shortcut buttons on the top left edge of the tablet. These buttons are quite nice because they don’t click obnoxiously loudly, and they also don’t require a large amount of force to press either. The only con about them is that they feel a bit cheap, but I think I could ignore that because they’re relatively good otherwise.

Clearly, this tablet was not created with left-handed people in mind as those buttons are completely unusable in left-handed mode. (Unless you flip the tablet upside down. I think that could work.)

At least for right-handed people, the placement of the buttons is at least logical and usable, but again, this design doesn’t seem to consider left-handed use at all.

The tablet port is a standard Micro-USB port with no tunnel in front of it.

The tablet cable is a ~150cm cable. It comes with a non-painful velcro strap attached for holding the cable together.

10 - Pen

The GAOMON S620 uses the Artpaint AP32 model battery-free pen (according to the product page) which is a very simplistic but nicely designed pen. It has a semi-hard/semi-soft rubber grip with two side buttons.

Holding this pen feels very comfortable and I have no complaints about using it. It’s a pretty good quality pen which I didn’t expect with such a budget tablet. I was completely expecting a simple hard plastic pen to be completely honest, so seeing it had a comfortable rubber grip was a pleasant surprise.

The two side buttons protrude noticeably from the surface of the pen which helps a lot with feeling where they are.
The common complaint about protruding buttons is that you accidentally click them sometimes, but I would much rather have protruding buttons I can actually find without looking, rather than buttons that I can’t find at all (therefore making them useless) because they are flush with the surface of the pen.

The top of the pen does not have anything.

12 - Pen Nib Wear

The pen nib wear on this tablet is pretty high due to the rough texture of this tablet. My pen nib already has a fairly large flat side after just 1-2 days of straight use.

The tablet surface on the other hand is not scratched at all despite the wear on the pen nib.

13 - Pen Pouch

This tablet comes with a felt pouch to hold the pen if you feel the need to use it.

Tablet drivers

The tablet drivers were very simple to install. Just go download the latest version from and uninstall all other tablet drivers you have on your computer before installing it.

If you’ve installed the driver successfully, there will now be a desktop shortcut and a system tray icon. The system tray icon will show up in your system tray (where your clock is), and this is the icon which shows that your driver is running and also gives you quick access to the driver settings.

Although the installer doesn’t prompt you to restart your computer after it finishes, I wholeheartedly suggest restarting your computer anyways to allow Windows to properly integrate the driver files into your system.

Oddly enough, the GAOMON driver does not properly auto-start on my Windows 10 computer after turning on/restarting the computer. It also doesn’t automatically make a auto-start option in the “Startup” section of Task Manager.
I found this odd because all my other tablet drivers properly add a auto-start option for themselves on the same Windows 10 computer, and my Windows 8.1 laptop also auto-starts the GAOMON driver properly (also adds the GAOMON driver to the “Startup” section in Task Manager) unlike my Windows 10 computer.

I contacted GAOMON support about this and they just told me to Google how to manually make a program auto-start on restart/login. Hm.
This obviously isn’t a particularly big issue (because you can just start up the driver manually when you’re ready to draw), but I would have appreciated if they had at least tried to figure out whether it was the GAOMON installer or my computer which is the problem, rather than tell me I should just accept it as is and put in extra effort to fix it for myself.

15 - Driver

In the driver, you will have the ability to configure your tablet shortcut buttons, pen buttons, pen pressure curve, and work area. There’s also the option to save and open your settings using the Export and Import buttons.

You will see an “Administrator privileges” button along the bottom, but there is no need to worry about it. I’ve tried working without pressing that button and I’ve noticed absolutely no difference in performance or anything, so I don’t think it does anything important.

The Press Keys tab allows you to customize the functions mapped to your shortcut buttons.

As you can see above, the Press Key Settings menu has keyboard shortcuts, pen clicks, “switch” functions, and run program features.
These drivers allow you a lot of freedom with the functions you can create, and you can mix and match the categories if you need to.

The buttons on the GAOMON S620 also have anti-ghosting capabilities, so you are able to activate more than one shortcut button function at the same time.

17 - Driver Digital Pen

The Digital Pen tab allows you to customize the pen buttons and the pen pressure curve. The pen buttons have the same configuration options as the shortcut buttons.

Usually, you will want to uncheck the “Enable Windows Ink” option to prevent Windows Ink from messing with your pen inputs. With that said, however, some programs such as Photoshop require you to enable Windows Ink to have pen input. Adjust this option as you see fit.

18 - Driver Work Area

The Work Area tab allows you to customize the monitor your tablet is mapped to, and the size of the active area your tablet uses. Pick your monitor from the drop down menu, then click the Full Area button, and then click the Screen Ratio button to properly adjust your tablet area to match your monitor.

There is also the option to rotate your tablet input as needed.

Drawing tests

These pen tests are all done with the same settings for both the canvas and the pens. These tests are only done in Clip Studio Paint as that is the only program where I totally understand how to remove all unwanted variables.
If you are worried about whether this tablet will work with your art program, don’t be afraid to contact support to ask them directly.

-The canvas will always be a 3000x3000px 300dpi page (the above test page is a 3000x6000px 300dpi page, so just two pages stuck together).
-The test pens are mostly all 100px linear pressure curve pens. Pen pressure for size and/or opacity is enabled based on the test.
-The slow ruler line test uses a 10px no pen pressure pen to clearly show wobble and jitter. I also use a 50px pen pressure enabled pen to see the visibility of wobble/jitter with pen pressure is enabled.
-The IAF (Initial Activation Force) test uses a 300px linear pressure pen to show the thinnest lines possible, as well as demonstrate the IAF of the tablet.

20 - Scribble Test

1) Scribble Test – Grade: Pass-ish
Test pen 1 – 100px – pen pressure: size
Test pen 2 – 100px – pen pressure: size+opacity

For my pen tests, I always start out with a few pen pressure scribbles to see if I can do some nice squiggly lines with increasing pen pressure. I also do some back and forth shading and some spirals with increasing pen pressure.

With the GAOMON S620, I had a little bit of troubles getting really thin lines consistently in my scribbles. I had to try pretty hard to get the scribbles to start with really thin lines, and the lines would often start quite thick.
However, since I was able to get thin lines a fair amount of times, I can give the tablet a pass-ish grade here.

21 - Slow Ruler Line Test

2) Slow Ruler Line Test – Grade: Pass
Test pen 1 – 10px – pen pressure: none
Test pen 2 – 50px – pen pressure: size

The slow ruler line tests done with a no pen pressure pen were pretty good on this tablet. The only time the wobble became noticeable was when I was holding the pen as tilted as I possibly could.

I think it is unrealistic to expect that people will be using the pen at that angle because this tablet does not have pen tilt, so I believe the wobble is negligible on this tablet as there is almost no noticeable wobble at a normal drawing angle.
If you use your pen tilted as far over as it can go, then consider yourself warned.

This tablet gets a pass here.

22 - Quick Hatching Test

3) Quick Hatching Test – Grade: Pass
Test pen 1 – 100px – pen pressure: size

The quick hatching test is to check whether the tablet keeps up with pen inputs. Usually, the only way to fail this section is if the pen is noticeably laggy and causes unwanted inputs like fishhooks at the beginning or end of the line.

As you can see, this tablet appears to have no problems with fishhooks. I also never saw the cursor lagging noticeably, so it gets a pass here.

23 - Short Release Taper Test

4) Short Release Taper Test – Grade: Pass-ish
Test pen 1 – 100px – pen pressure: size

This test is meant to see the smoothness of the pen pressure taper when going from max to min pressure quickly. Basically, you press your pen down hard then flick to the side to see how smoothly the stroke tapers.

With the GAOMON S620, I would sometimes get uneven tapers, and other times get nice tapers. Good tapers occurred more frequently than bad tapers, so I’ll give this tablet a pass-ish for this section.

24 - Pen Pressure Control+Transition Test

5) Pen Pressure Control/Transition Test – Grade: Pass
Test pen 1 – 100px – pen pressure: size+opacity

This section is to test the smoothness of the transitions in pen pressure.
-The circles at the top are one of Youtuber Brad Colbow’s tests. It is used to check if you can properly control the pen pressure all the way around a circle. If there is a pressure jump, some circles will feel impossible to control due to that jump.
-The lines at the bottom are slow strokes done with smooth increases or decreases to pen pressure in mind. The arrow points in the direction which the stroke was done, and the smoothness of the gradients show how smooth the pen pressure transitions.

For this tablet, there didn’t seem to be any particularly noticeable pressure jumps. You can see a slight jump at the low end of the pressure curve, but everywhere else seems to be very smooth.

I think I can give this tablet a pass here.

6) Initial Activation Force & Lightest Pen Pressure Test – Grade: Fail
Test pen 1 – 300px – pen pressure: size

This test tries to demonstrate the IAF of the tablet, and also shows the lowest possible pen pressure the tablet is capable of producing.
IAF is the amount of force necessary to cause the pen to output a line. Ideally, your tablet will have an extremely low IAF where the pen will output a line with the least amount of force possible.
A high IAF causes issues such as light pen taps not registering as clicks, and the inability to sketch very lightly, both of which become quite annoying the more you experience it.

For this test page, the squiggly lines should begin right on the start line.
-If the line begins right on the start line, this indicates that the IAF is extremely low (low IAF is best) and the line just appears naturally without effort.
-On the other hand, if the line does not begin on the start line and instead begins further along the stroke, this means that the IAF is so high that I needed to search for the IAF by increasing my force little by little until I finally started outputting a line.

An example of the ideal test page is the Huion New 1060 Plus (2048) IAF test page which I included above for comparison. Almost all the lines begin right on the start line, and the lines are almost transparent, showing that the tablet is also capable of drawing extremely light pen pressures.

The GAOMON S620 on the other hand has a relatively high IAF and I had troubles getting the lines to begin near the start line in the test page.
As such, I cannot give a passing grade to the GAOMON S620 in this test.

A funny thing I noticed is that I could use my Huion PW100 pen on the GAOMON S620, and the IAF for that pen was extremely low in comparison to GAOMON’s pen. The very last line on the GAOMON S620 test page is done with the Huion PW100 pen, and I was easily able to begin the stroke on the start line because the IAF was so much lower on the Huion pen.
If GAOMON wants to improve the S620, perhaps they could start by improving the pen that it uses.


So all in all, the drawing test results are:
1) Scribble Test – Pass-ish
2) Slow Ruler Line Test – Pass
3) Quick Hatching Test – Pass
4) Short Release Taper Test – Pass-ish
5) Pen Pressure Control/Transition Test – Pass
6) Initial Activation Force & Lightest Pen Pressure Test – Fail

Ideally, all the above tests should have at least a “Pass-ish” for their grades because the most vital function of a drawing tablet is to draw properly and predictably. Failing any of these tests means that it doesn’t do that.

The drawing experience!

My actual drawing experience with the GAOMON S620 was okay, but it certainly wasn’t particularly enjoyable.

The high IAF showed itself too frequently in the form of my clicks not being registered when I was tapping options and tools. I also had a hard time adapting to the pen pressure because my lines just wouldn’t appear when I pressed as lightly as I was used to pressing on my other tablets.

Aside from the high IAF, there weren’t any particularly notable issues and I could actually use the GAOMON S620 to draw, but the high IAF was more than enough to ruin the overall drawing experience for me.


Like I said before, I wouldn’t really recommend this tablet to anyone, especially at its actual retail price of 40 USD.

If you simply don’t have more than ~20 USD to use on a tablet, or you have some money you want to throw around, you can consider the GAOMON S620 for the coupon price of ~20 USD on AliExpress (look here for coupon), but I wouldn’t suggest this tablet to anyone who’s looking for a serious tablet they want to practice drawing with.

If you absolutely need something cheap, you can go for this tablet with the AliExpress coupon, but I seriously suggest that you save up just a tiny bit more to get one of Huion or XP-Pen’s equivalent small size (~6×4 inch) offerings which perform noticeably better, especially with regards to the IAF.

Places to buy the tablet | | AliExpress
People living in other regions should check their regions online retailers.

If you have any questions about the tablet, feel free to ask me!

Why I do not recommend the Huion HS610

Update (Jul. 21, 2019): Unfortunately, there has been no progress from Huion on fixing this issue. Since it’s already been this long since I reported it to them, I doubt it’s on their list of urgent things to work on.
In other words, you probably shouldn’t expect this issue to be fixed any time soon.

I will update this again if they do give me a fix that works. If you see no updates above this, then there has most likely been no progress, or I have not been informed of it.

Update (Jun. 19. 2019): The new Huion driver version released on June 10, 2019 did not fix the issue.

Current status (Jun. 05, 2019): Huion sent me a replacement PW100 pen to test, and it performed much better than my other PW100 pens on the Huion HS610 and did not have the massive leap in the middle of the pressure curve.

This new pen is technically supposed to be the exact same PW100 pen model as my other PW100 pens, but it’s clearly different because the spring of the pen nib is much harder on the newer one.
Probably due to this, the new pen doesn’t have the pen pressure leap issue on the Huion HS610 (or well, not as much of it). Instead, it has a different issue where it lacks the capability to draw really light pressures on the Huion HS610.

The below tests are done using the new PW100 pen on my Huion HS610 and Huion H1060P.

As you can see in the above test page, basically all the lines done with the Huion HS610 are unable to go as thin as the lines done on the Huion H1060P. And I will repeat again, these tests are both done with the exact same PW100 pen.
The fact that both my older and newer PW100 pens work objectively better on the Huion H1060P means that the Huion HS610 probably has some issue with reading the pen pressure information from the pen.

Of course, you may have noticed that I am using some rather large pens here (a 100px brush on a 3000x3000px canvas). If you were to use a smaller pen size, then you probably won’t see these issues at all with the new PW100 pen.
Even in the test page above, most newcomers probably wouldn’t be able to tell that there’s a problem with the Huion HS610 test page if I didn’t point it out.

In other words, yes, if the Huion HS610 you bought comes with this “new” PW100 model (maybe Huion changed out the pens after being told about this issue), then the issues are so minimal that you probably won’t have any issue drawing with the Huion HS610 since the pen pressure leap is basically unnoticeable with the new PW100 pen.
However, the pen performance is still clearly inferior to the Huion H1060P (using the exact same pen on both tablets), which is why I still can’t recommend the Huion HS610 until Huion releases an update to make the pen pressure work at least slightly better.

Is this tablet perfect? No.
Is this tablet viable now? Yes, it should be good enough for most people.

I just don’t want to let Huion get away with dropping their pen pressure standards. I want them to have the same amazing pen pressure as the Huion H1060P on their new products. That is the reason why I am still waiting for them to fix this issue and make the Huion HS610 better.

Current status (May 29, 2019): Still waiting.

Current status: My Huion rep has told me that they are working on the issue and will notify me once they have a firmware update.Huion HS610 Tablet

The Huion HS610 is one of Huion’s two newest screen-less tablets, the other being the Huion HS64.

I saw the Huion HS610 and ordered it right away because: 1) The pre-sale was around 40% off, and 2) the hardware was similar to the Huion H1060P (which I love), but the Huion HS610 is 20 USD cheaper.

I figured that if the Huion HS610 for 80 USD had the quality of the Huion H1060P which is 100 USD, I could recommend it to everyone instead of the Huion H1060P, but as you can probably tell from the title of this post, it was not the “perfect” tablet which I had hoped it would be.
The issue with it is even so big that I need to write this warning post right away to prevent potential buyers from buying it.

Anyways, without mucking around anymore, let’s get straight to the issue.

The Huion HS64 interests me too (although I dislike the “Intuos clone” design), but I was only going to buy one of the two new tablets, so I chose the HS610 which had the possibly of becoming my new main tablet.

The Issue – Non-Linear Pen Pressure

The issue with the Huion HS610 is that it has a non-linear pen pressure curve.
This means that the pen pressure “blows out” in the middle of the pen pressure curve, making it extremely hard, if not impossible, to do smooth transitions at the problematic pen pressure level when doing slow strokes.

It should be noted that when doing quick and long strokes, the problem area is less noticeable because it is stretched over a longer area, making it much less apparent.
However, when doing any type of stroke which requires more precise control of your pen pressure, it becomes blatantly obvious that it skips over a certain part of the pen pressure curve.

Huion HS610 Pen Pressure Issue

The above image has my attempts to draw smooth pen pressure transitions on the Huion HS610. As you can see, the pen pressure clearly “blows out” at a certain point.
This means that the Huion HS610 fails one of the most basic and vital criteria of drawing tablets, which is the ability to draw predictable and controllable lines.

It should be noted that my strokes are drawn at a slow/medium speed in the direction indicated on the test page. This issue becomes less apparent when drawing fast+long strokes as the pen pressure becomes stretched over a longer area, which in turn makes the problem area much less apparent.

Some of you who are regulars to my site probably feel that you’ve seen this issue before, and you are correct. This is the exact same issue that the Huion H640P had for a whole year after release which was only solved fairly recently near the end of 2018 with a firmware update.

Huion HS610 Pen Pressure Issue - H1060P Example

The above image is me doing the exact same tests on my Huion H1060P.

Just like the case with the Huion H640P, this is clearly a firmware issue in the Huion HS610 because I can use the PW100 pen which came with the HS610 on my H1060P and the pen pressure does not “blow out” like it does on the HS610.


I am rather disappointed that Huion has made the same mistake again after they finally fixed it on the Huion H640P, but hopefully, this time they don’t take a whole year to get around to fixing it.

Of course, I will still review the Huion HS610 eventually, but I decided that this issue was extremely important and needed to be pointed out right away to warn any potential buyers about this issue on the HS610, at least, until this issue has been addressed by Huion.

If you were considering the Huion HS610, I highly recommend that you spend an extra 20 USD to get the Huion H1060P instead as that is the best tablet I have drawn on so far, unless you were considering the Huion HS610 solely for the Android compatibility. It is certainly usable even in its current state, but there are better options if you are not getting it for its Android compatibility.
(And yes, just in case you were wondering, this non-linear pen pressure issue occurs on Android as well.)

To be clear, this issue will not affect most people as most people use quick strokes when drawing. However, the presence of this issue means that this tablet is not as good as Huion’s other tablets when it comes to the quality of the pen pressure curve.
If you’re looking for a tablet with “the best” drawing capability, I would suggest looking at other tablets until the HS610 has a firmware update fix.

In conclusion, I recommend that everyone avoid buying the Huion HS610 until Huion has a firmware update for it which fixes this issue. Please share this post to anyone who you see considering buying the Huion HS610 as well.