I have purchased Samsung Buds Pro, AirPods Pro 2, Sony MDR-7506, Bose QC45, Sennheiser by Beyerdynamic, and some products from lesser-known brands. All of them are brand new and have no performance issues. However, I can only hear sound in both ears, and none of them have made me think they sound good.Even when spatial audio is turned on.Many years ago, I bought a random pair of headphones for only 8 dollars, but it gave me a good feeling, and for many times when I used it, I was almost unsure whether the sound was coming from nature or from the headphones, and his voice was also good in the audio files with no spatial feeling, and I clearly remember that after changing in, I heard a lot of details that I couldn't hear from the same cheap headphones. I don't think so, at less than a tenth of the price I can get the frequency response distortion of these parameters than the headphones I bought later. What are the conditions that make my experience far better than the subsequent purchase of the device? This has puzzled me for many years.