This IC is of impecable materials and manifacture and it comes in a quality little box with guarantee card. It is long enough to connect two portable devices such as a dap with a portable amplifier and the connection is absolutely perfect. Acoustically it enhances noticably the sound adding more transparency with more air and space around the instruments. The bass is presented in a more autharative way with extra body and weight. Highs are airier and without any sign of sibilance or harshness. Delivery from Audiophonics was very fast. A very satisfactory deal overall!