FiiO L9 L-Shaped Line Out Dock (LOD) Cable For iPod and iPhone
I used to use the headphone jack on my iPod 5th Gen to connect to my Fiio E12 amp. In doing this, I was simultaneously using 2 volume controls (one on the iPod and one on the E12), which clearly degrades the sound quality. Since getting the L9, there is an unmistakable and distinct improvement in the purity of the sound I am getting from my headphones (Yuin PK1 and Sennheiser HD 598). I am not talking about a subtle difference. Trust me, you need one too. Otherwise, you will have no idea whatsoever how good