Notebookcheck Logo

Uperfect UStation Delta review: Portable monitor with dual 15.6-inch displays expands the desktop

Portable Multitalent? Uperfect has announced the UStation Delta, an unusual monitor that effortlessly expands the mobile workspace with two 15.6-inch displays. The company has provided us with a prototype, and we will take a closer look at the display as well as potential use scenarios for it.

Uperfect has been involved in the portable display business for several years now. 
With its wide range of monitors, the company is currently well-positioned to meet users' needs. With the Uperfect UStation Delta, the company has introduced a peculiar portable display that aims to enhance everyday work thanks to its exceptional versatility. Those who frequently change workplaces and don't want to miss out on the benefits of multiple screens should take a closer look: Thanks to the two vertically arranged 15.6-inch displays, usable digital workspace can be significantly expanded. A single cable is sufficient to operate both screens, eliminating the annoying cable mess on the desk. Since these are separate displays, two independent signal sources can be used simultaneously.

You can find further information on the Uperfect UStation Delta and other Uperfect monitors here.

The delivery package of the Uperfect UStation Delta includes:

  • Uperfect UStation Delta dual monitor
  • a protective sleeve
  • 2 x mini-HDMI to HDMI cables
  • 2 x USB-C to USB-C cables
  • PD 30 W charger
  • manual

Case and Ports

The Uperfect UStation Delta sports the same great build quality that we have already seen when testing other Uperfect products. Even if this is a prototype, the craftsmanship is impeccable, and the choice of materials is highly successful. The device is entirely encased in aluminum, giving it exceptional stability. The hard stand is also made of aluminum, ensuring a secure support for the display even when completely folded down. 

For those who intend to use the display in a home office setting, the device can also be attached to a VESA mount holder. Additionally included in the delivery package is a sleeve that protects the device during transportation and also serves as a bag for the necessary cables. 

Regarding connections, the Uperfect UStation Delta features two USB-C inputs and two mini-HDMI inputs. Furthermore, there is an additional USB-C port to run the device off an external power supply if needed. As long as USB-C connection is employed for both power and data, there is no need for an external power supply.

Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta
Uperfect Delta (Image source: Uperfect)
Uperfect Delta (Image source: Uperfect)
Uperfect Delta (Image source: Uperfect)
Uperfect Delta (Image source: Uperfect)
Uperfect Delta (Image source: Uperfect)
Uperfect Delta (Image source: Uperfect)
Uperfect Delta (Image source: Uperfect)
Uperfect Delta (Image source: Uperfect)

Display - Dual 15.6-inch with 1,080p

Subpixel structure
Subpixel structure
Slightly visible clouding
Slightly visible clouding

The Uperfect UStation Delta features two 15.6-inch screens, offering a resolution of 1920 × 1080 pixels each. According to the technical specifications, the screens are supposed to provide a display brightness of 250 cd/m². However, we were only able to measure a maximum display brightness of 226 cd/m². The average brightness of the two displays is even lower that that, even if they are still adequately bright for typical indoor use. Another drawback to mention is that, in terms of black levels, there are significant variations between the two displays. The upper display only achieved a contrast ratio of 471:1, whereas the lower screen was good for 1,026:1. Clouding is a concern for both displays. Our testing revealed the complete absence of PWM at all brightness settings, which is good as it makes potential eye fatigue during extended use less of a worry. In terms of response times, the Uperfect UStation Delta's results fall in the good mid range. Better values are provided by the UGame K5 which is not surprising, considering it is marketed as a gaming monitor.

Note:

The maximum display brightness can only be achieved if connected to the included power adapter. During single-cable operation via USB-C, we observed a maximum display brightness of only 160 cd/m². 

196
cd/m²
200
cd/m²
196
cd/m²
186
cd/m²
212
cd/m²
196
cd/m²
185
cd/m²
203
cd/m²
226
cd/m²
Distribution of brightness
tested with X-Rite i1Pro 2
Maximum: 226 cd/m² (Nits) Average: 200 cd/m² Minimum: 7 cd/m²
Brightness Distribution: 82 %
Contrast: 471:1 (Black: 0.45 cd/m²)
ΔE Color 6.64 | 0.5-29.43 Ø4.99, calibrated: 3.53
ΔE Greyscale 6.78 | 0.57-98 Ø5.2
52.1% AdobeRGB 1998 (Argyll 2.2.0 3D)
73.3% sRGB (Argyll 2.2.0 3D)
50.1% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.1
Uperfect Delta
1920x1080, 15.60
Uperfect Delta
1920x1080, 15.60
Uperfect X Pro LapDock
3840x2160, 17.30
Lenovo ThinkVision m14t
1920x1080, 14.00
GMK KD1 Portable Monitor
3840x2160, 14.00
KYY X90A
1920x1080, 14.00
Uperfect UGame K5
1920x1080, 17.30
Display
-1%
25%
28%
35%
28%
51%
Display P3 Coverage
50.1
49.8
-1%
65
30%
63.6
27%
69.6
39%
64
28%
81.3
62%
sRGB Coverage
73.3
73.1
0%
88.2
20%
95.4
30%
94.4
29%
95.4
30%
100
36%
AdobeRGB 1998 Coverage
52.1
51.8
-1%
64.5
24%
65.4
26%
71.1
36%
66
27%
80.4
54%
Response Times
-3%
-79%
-29%
-215%
16%
42%
Response Time Grey 50% / Grey 80% *
18 ?(4, 14)
19 ?(4, 15)
-6%
35 ?(17, 18)
-94%
15.6 ?(6.4, 9.2)
13%
62 ?(28.4, 33.6)
-244%
18 ?(4, 14)
-0%
12 ?(6, 6)
33%
Response Time Black / White *
16 ?(7, 9)
16 ?(7, 9)
-0%
26 ?(11, 15)
-63%
27.2 ?(14.8, 12.4)
-70%
45.6 ?(30.8, 14.8)
-185%
11 ?(3, 8)
31%
8 ?(4, 4)
50%
PWM Frequency
1000 ?(99)
5000 ?(99)
Screen
26%
2%
69%
43%
43%
47%
Brightness middle
212
195
-8%
248
17%
310.6
47%
325.3
53%
258
22%
266
25%
Brightness
200
182
-9%
232
16%
295
48%
316
58%
235
18%
245
23%
Brightness Distribution
82
88
7%
84
2%
89
9%
82
0%
80
-2%
80
-2%
Black Level *
0.45
0.19
58%
0.73
-62%
0.23
49%
0.3
33%
0.27
40%
0.24
47%
Contrast
471
1026
118%
340
-28%
1350
187%
1084
130%
956
103%
1108
135%
Colorchecker dE 2000 *
6.64
4.92
26%
6.92
-4%
2.01
70%
4.75
28%
3.28
51%
3.07
54%
Colorchecker dE 2000 max. *
12.33
10.5
15%
8.75
29%
3.58
71%
8.09
34%
5.16
58%
5.22
58%
Colorchecker dE 2000 calibrated *
3.53
3.58
-1%
1.9
46%
2.19
38%
3.44
3%
Greyscale dE 2000 *
6.78
4.66
31%
6.67
2%
1.9
72%
6.2
9%
2.98
56%
1.43
79%
Gamma
2.1 105%
2.3 96%
1.7 129%
2.06 107%
2.31 95%
2.14 103%
2.35 94%
CCT
6676 97%
6670 97%
7452 87%
6455 101%
6691 97%
6965 93%
6509 100%
Color Space (Percent of AdobeRGB 1998)
65.4
Color Space (Percent of sRGB)
94.6
Total Average (Program / Settings)
7% / 16%
-17% / -5%
23% / 45%
-46% / 4%
29% / 36%
47% / 47%

* ... smaller is better

Color space coverage

We measured color space coverage separately for both screens. The differences are relatively minor, and both displays provide almost identical results. For the sRGB color space, our testing revealed coverage of slightly over 73 percent, which isn't particularly high. Meanwhile, only slightly over 50 percent of the colors found in the AdobeRGB and P3 color spaces can be displayed. This isn't nearly good enough for semi-professional photo or video editing. Rather, the color accuracy is only sufficient for the Uperfect to serve as a basic desktop extension for document editing or Internet browsing. Even occasional gaming sessions using a console are viable as high color accuracy is not a must for gaming.

Color space coverage - the upper screen

sRGB
sRGB
DCI-P3
DCI-P3
AdobeRGB
AdobeRGB

Color space coverage - the lower screen

sRGB
sRGB
DCI-P3
DCI-P3
AdobeRGB
AdobeRGB

In real-world use, both displays deliver acceptable image quality. It is obvious that the Uperfect monitors are not factory-calibrated. With factory settings, the DeltaE-2000 values for colors were on the higher side.

Manually calibrating both displays allowed us to reduce the grayscale DeltaE-2000 values significantly. Both screens now achieve an excellent value here that is clearly below 3.
In contrast, we only see a slight improvement in the colors. In this regard, the Uperfect UStation Delta does not achieve a value below 3. Please note that calibrating these screen causes the meager display brightness to drop further.

CalMAN measurements in the factory state


Grayscale (upper screen)
Grayscale (upper screen)
ColorChecker (upper screen)
ColorChecker (upper screen)
Saturation (upper screen)
Saturation (upper screen)
Grayscale (lower screen)
Grayscale (lower screen)
ColorChecker (upper screen)
ColorChecker (upper screen)
Saturation (upper screen)
Saturation (upper screen)

CalMAN measurements after manual calibration

Grayscale (upper screen)
Grayscale (upper screen)
ColorChecker (upper screen)
ColorChecker (upper screen)
Saturation (upper screen)
Saturation (upper screen)
Grayscale (lower screen)
Grayscale (lower screen)
ColorChecker (upper screen)
ColorChecker (upper screen)
Saturation (upper screen)
Saturation (upper screen)

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
16 ms ... rise ↗ and fall ↘ combined↗ 7 ms rise
↘ 9 ms fall
The screen shows good response rates in our tests, but may be too slow for competitive gamers.
In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 32 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (21.4 ms).
       Response Time 50% Grey to 80% Grey
18 ms ... rise ↗ and fall ↘ combined↗ 4 ms rise
↘ 14 ms fall
The screen shows good response rates in our tests, but may be too slow for competitive gamers.
In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 27 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (33.5 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM not detected

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 17673 (minimum: 5 - maximum: 3846000) Hz was measured.

Both IPS panels offer good image quality in normal use. Color changes are barely noticeable, to the point of being completely absent.

Uperfect UStation Delta - viewing angles
Uperfect UStation Delta - viewing angles

Speakers

The Uperfect UStation Delta does have speakers of its own. However, these are only suitable as a backup solution. Speech is easy to understand, but bass is clearly lacking. At 100% volume, the speakers deliver a little over 75 dB(A).

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2037.939.72535.537.23140.136.84033.526.75035236325.721.28025.718.110032.625.912533.616.11603713.420046.412.825047.811.231550.81140055.29.250059.610.963065.79.580065.29.4100066.612.4125065.911160064.911.3200063.712.2250054.112.5315061.313.440006214500065.214.3630062.814.8800055.3151000048.915.11250045.214.81600037.614.3SPL75.225.1N34.90.6median 55.3median 12.8Delta9.71.840.840.240.834.231.634.234.231.134.235.826.135.834.226.934.23126.43123.620.123.624.322.224.324.615.124.625.510.825.52911.12937.41037.443.610.743.649.29.449.257.79.757.768.210.668.270.510.170.562.310.762.357.913.657.962.611.462.662126260.212.760.262.113.262.16513.96566.814.466.861.614.761.654.714.954.743.51543.541.214.941.23714.53775.625.275.634.30.634.3median 57.7median 12.7median 57.711.6211.6hearing rangehide median Pink NoiseUperfect DeltaUperfect UGame K5
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Uperfect Delta audio analysis

(±) | speaker loudness is average but good (75.2 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 13.9% lower than median
(±) | linearity of bass is average (9.9% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 8.1% higher than median
(+) | mids are linear (5.8% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.4% higher than median
(±) | linearity of highs is average (12.4% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (23.9% difference to median)
Compared to same class
» 67% of all tested devices in this class were better, 7% similar, 25% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Compared to all devices tested
» 67% of all tested devices were better, 7% similar, 25% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Uperfect UGame K5 audio analysis

(±) | speaker loudness is average but good (75.6 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 27% lower than median
(±) | linearity of bass is average (7.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 5.7% higher than median
(±) | linearity of mids is average (12.4% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.3% higher than median
(±) | linearity of highs is average (10% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (29.3% difference to median)
Compared to same class
» 85% of all tested devices in this class were better, 3% similar, 12% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Compared to all devices tested
» 85% of all tested devices were better, 3% similar, 12% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Pros

+ two 15.6-inch displays at 1080p
+ operable with just one single cable
+ independent use of two sources
+ stylish design
+ impeccable craftsmanship
+ high-quality material selection
+ stable stand
+ VESA mount compatibility
+ No PWM
+ integrated speakers

Cons

- low display brightness
- color space coverage
- high DeltaE-2000 values
- maximum display brightness achievable only with external power supply

Verdict - Useful extension with good features

Uperfect UStation Delta review - test monitor provided by Uperfect (Image source: Uperfect)
Uperfect UStation Delta review - test monitor provided by Uperfect (Image source: Uperfect)

At first glance, the Uperfect UStation Delta is a great addition to the digital workplace. Equipped with two 15.6-inch screens, it's excellently suited for multitasking. Whether reading long texts, working with large spreadsheets, or browsing the Internet, the ability to do without constantly rearranging windows on the screen is wonderful to have and once you get used to it, you won't want to go without it.

The Uperfect UStation Delta impresses with its excellent craftsmanship and use of high-quality materials. The connectivity is also well-designed, allowing for operation of two independent devices on the dual display, if desired. Its versatility spans a wide range of applications, as it can be connected to laptops, smartphones, tablets, and even gaming consoles. However, there are significant limitations in terms of color accuracy, rendering the display unsuitable for professional photo and video editing. Even in semi-professional settings, the Uperfect UStation Delta has limited usability.

The Uperfect UStation Delta is a promising addition to the mobile workspace. Enhanced color accuracy and a touchscreen would further enhance the device's appeal.

Another point that deserves some tongue-lashing is the somewhat limited display brightness. We had also hoped for better DeltaE-2000 values. In its current state, the Uperfect UStation Delta is just not convincing enough. 630 US dollars is just too much to ask for a digital workspace extension like this. There is a chance Uperfect will implement some enhancements, considering the test unit here is a prototype. Consequently, there is still potential for changes before the final product release.

The 1080p resolution is not bad. However, it's worth noting that a dual monitor similar to the Uperfect UStation Delta has been brought to the market through an Indiegogo campaign already - its name is Lepow DualViews. With its two QHD displays and touch functionality, the Lepow model has more to offer than the Uperfect.

Prices & Availability

Currently, the Uperfect Delta is not sold anywhere. Uperfect intends to launch a Kickstarter campaign shortly, offering attractive deals for early birds. The device is currently listed on the Uperfect's website for $630. Whether this price will remain unchanged is uncertain. Those who have a genuine interest in purchasing the display should check the website for updates regularly.

Transparency

The present review sample was made available to the author as a loan by the manufacturer or a shop for the purposes of review. The lender had no influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review.

Read all 11 comments / answer
static version load dynamic
Loading comments
Comment on this article
Please share our article, every link counts!
> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Reviews > Uperfect UStation Delta review: Portable monitor with dual 15.6-inch displays expands the desktop
Sebastian Bade, 2023-08-20 (Update: 2023-09- 7)