Here is my take on the Sivga Que. It uses a 10mm Beryllium diaphragm dynamic driver earphone with zinc alloy housing with a Maple Wood back. Purchase links : Amazon-USA: https://www.amazon.com/dp/B0D7V7V2ZM Amzaon-Japan: https://www.amazon.co.jp/dp/B0D7V7V2ZM Aliexpress: https://www.aliexpress.us/item/3256807067025278.html?gatewayAdapt=glo2usa4itemAdapt Official website: https://www.sivgaaudio.com/product_d?id=21 Graph - https://vortexreviews.squig.link/?share=Sivga_Que Timecodes : 0:00 Introduction and disclaimer 0:39 Specs, unboxing and first look 3:16 Review intro 3:28 Looking over the cable 4:04 Comfort and fit 4:24 Build quality 4:35 Sound isolation 4:49 Power and sensitivity 5:07 Timbre 5:24 Resolution and technicalities 5:35 Soundstage and imaging 5:57 Thoughts on sound and tuning 9:03 Conclusion