Good build quality.
I use them on a computer with a DAC for music and gaming.
Average sound level, with a little adjustment on the equalizer you will find exactly what suits you.
The volume is good for the desk seating distance.
The bass is relatively low for the build quality of the speaker, there are plastics with better.
Overall, it is good for the price.

I was expecting them to be very nice, but the sound quality is not satisfactory. It's like I have wrapped a thick blanket around the speakers, resulting in muffled sound.

The Chinese probably did it!
I have been involved in hi-fi for many years. I own an M.Fidelity A1 (class A) amplifier, Castle Pembroke speakers, a Pro-ject turntable, etc. So, I have years of experience and a demanding ear. The EFIDIER R1380T speakers are very decent! I say it and I mean it! It is a small speaker, but impressive in its performance. Its tonal balance, descriptive nature, and energy are charming. To cut the long story short, run and buy them from a specific merchant who sells them for 88 Euros when others sell them for 200!!
In Europe, their price is cheaper than in Greece (110-145 Euros), so don't wait at all!! Buy them.
P.S. Something important? These speakers, like all speakers in the world, need to be broken in for at least 2-3 hours before they reach their true value.