According to your requirements for listening to music, it is recommended that you choose products from the three brands of Sennheiser, Beyerdynamic, and AKG. You don’t need to consider the Japanese audio-technics and Sony. Japanese headphones It's more suitable for listening to pop music, but it still lacks some details for classical music, bel canto, etc. Sennheiser, Beyerdynamic, and AKG headphones have higher requirements for clear and transparent sound levels, balance and coordination of parts, and sound-image orientation. They also have a good sense of space and are relatively moderate in terms of fullness and warmth. More suitable for listening to violin, piano, etc. At the price of 500 yuan, it is recommended to consider Sennheiser’s HD438. If you think it is too big, consider PX100.