周波数応答を見るとZIRCONよりグラフェンの方が良さそうだな
ZIRCONは6kHzが刺さりそう

DN-915509 (RAU0501)
https://audiobudget.com/product/ROCK/Zircon
https://audiobudget.com/img/product/ROCK/Zircon.fr.png

DN-915467 (グラフェン)
https://audiobudget.com/product/Kailuhong/AR-3001
https://audiobudget.com/img/product/Kailuhong/AR-3001.fr.png