How good is your hearing? Can you hear the low bass sounds on your guqin? How about the high pitch harmonic sounds on your guqin? Can you hear them clearly too?
Normal human hearing ranges from low bass sounds at 20Hz to the high pitch sounds at 20,000Hz. Test yourself with this. Enjoy!
(Yes, I could hear everything. I'm 41 years old. How about you? Suggestion: It's much easier to listen to this on speakers instead of earbuds or headphones. ^_^)