These headphones with "modular design" do not feel that cheap considering that each piece is a replaceable module.
When on your head you can ear the plastic of the earpad (like if they were not well plugged) but since they seal strong on your hear this do not impact directly the sound (but can alter the sound during abrupt movements). The bad part of this hard sealing/hold (to mask the plastic issue?) make these headphones not the most comfortable...
The sound is where these heaphones perform really bad, the low are slow and not punchy at all, the mid range is muffled and the mid/high ends soundstage is just not present. The overall sound quality is surprisingly just bad.
My experience around DJ and Studio headphones are various: Audio Technica ATH-MX50, Sennheiser HD-25, AKG 701 & 702, Beyerdynamics DT770 Pro & DT700 Pro X & DT 880, Audeze LCD-X (2021), Sennheiser IE 600, Moondrop blessing.
I do not recommend these headphones and rather recommend these options:
1. Sennheiser HD-25 sounds the best for DJ even if more fragile and the most comfortable (the cables always have connection issues after some times)
2. Audio Technica ATH-MX50 sounds good and are comfortable but are more bulky