Listening to Barrett on the stereo or using headphones is literally a hair raising experience! No wonder his music was classified as psychedelic rock!
The fundamental sound did change a bit after the Barrett era, and they made some real soothing stuff such as “Echoes” and the entire DSOTM album. However, from time to time, the original psychedelic sound did surface – notably in Animals.
I hereby recommend to all of you to listen to Floyd, especially the Barrett stuff using a good pair of headphones.