Leaving a lot on the table with those units just plugging them into a laptop. I tried most of the ones listed in this thread with at the kiosk in Singapore with my ipod and there wasn't really any huge difference between them.
https://www.themasterswitch.com/best-headphone-amps
Just like car audio, they work better driven with an amplifier.
But for farting around the house, if scoop up a cheapish pair of sony Bluetooth over-ear units. That's what I use for my PS4.