Korad is smaller, i am not sure how many count error it is. apples to oranges.
short run at several settings shows the following results for KORAD KA3005D:
Unloaded output.
Format is [setting voltage] = [actual output]:
0.10 V = 0.10159 V
0.50 V = 0.49860 V
0.70 V = 0.69990 V
1.00 V = 0.99695 V
1.01 V = 1.00594 V
1.20 V = 1.19851 V
2.00 V = 1.99745 V
3.00 V = 2.99477 V
3.20 V = 3.19320 V
4.00 V = 3.99448 V
5.00 V = 4.99893 V
6.00 V = 5.99988 V
7.00 V = 6.9970 V
8.00 V = 7.9970 V
9.00 V = 9.0025 V
10.00 V = 9.9969 V
11.00 V = 11.0012 V
12.00 V = 11.9992 V
13.00 V = 12.9997 V
14.00 V = 14.0037 V
15.00 V = 15.0026 V
16.00 V = 16.0053 V
17.00 V = 17.0020 V
18.00 V = 18.0143 V
19.00 V = 19.0084 V
20.00 V = 20.0103 V
21.00 V = 21.0092 V
22.00 V = 22.0081 V
23.00 V = 23.0159 V
24.00 V = 24.0120 V
25.00 V = 25.0161 V
26.00 V = 26.0132 V
27.00 V = 27.0226 V
28.00 V = 28.0181 V
29.00 V = 29.0227 V
30.00 V = 30.0234 V
31.00 V = 31.0211 V
Loaded output test.
Format is [voltage setting] => [unloaded voltage] / [loaded voltage] @ [load current]
3.20 V => 3.19293 V / 3.17939 V @ 4.138 A
5.00 V => 4.99890 V / 4.98319 @ 4.803 A
9.00 V => 9.0027 V / 8.9877 V @ 4.630 A
12.00 V => 11.9991 V / 11.9808 V @ 4.703 A
19.00 V => 19.0084 V / 18.9909 V @ 4.798 A
24.00 V => 24.0118 V / 23.9928 V @ 4.751 A
30.00 V => 30.0231 V / 30.0025 V @ 4.809 A
It has 39.99 digits for voltage and 5.999 digits for current.
Min voltage setting is 0.01 V it leads to actual output 0.0092 V
Max voltage setting is 31.00 V it leads to actual output 31.020 V.
Min current setting is 0.001 A it leads to actual output 1.527 mA
Max current setting is 5.100 A it leads to actual output 5.1001 A
It has calibration mode, so you can recalibrate it in case of needs
When output is off, the display works to setup regulation voltage/current.
When output is on, the display works as multimeter to show actual voltage/current, this is very useful.
And you can change output voltage/current with enabled output. When you enter edit mode, display shows regulation voltage/current and has flashing digit. When edit mode is completed, it switch back to multimeter mode.
Safety is important to me and i dont like no testing laboratory stamp on the Korad, but the design seems to be liked on so many tear downs online.
Regarding to the safety, KORAD KA3005D has a fuse and grounded case.
Also it has ground terminal near (+) and (-) output terminals.
It has transformer isolated output, so it looks pretty safe.
Regarding to malfunctions, I hear that one people catch the control register chip malfunction on the control panel after 5 years of usage, it leads to 18V output on the terminals when output is disabled. He replaced the chip and it fixed the issue. I'm not sure if new revisions added protection to prevent 18V on the output when control register chip fails, but people who catch this issue is very happy with this PSU