New, Unused Shipped anonymously. Effective in reducing ground loops (buzzing, humming, etc. when multiple devices are connected) between audio sources and receiving devices. Easy connection, simply connect it between your equipment and speakers. Brand: Vaorlo Audio Input: Stereo Frequency Range: 20Hz～20kHz Interface: 3.5mm Main Material: ABS Color: Black Size: Approximately 60 x 20 x 18mm Scheduled to be shipped via Yu-Packet Post Mini from Yu-Yu Mercari. Thank you.