New models and high quality Features: Eliminates buzzing noise caused by ground loops in car speakers and home stereo systems No external power supply required; this noise isolator delivers clear audio by reducing electrical noise Compatible with any portable device equipped with a 3.5mm audio jack for use with car audio or home stereo systems Compact and lightweight design saves space and allows for easy portability Specifications: Item type: Ground Loop Noise Isolator Audio interface: 3.5mm Frequency response: 20Hz–20kHz Audio input: Stereo Dimensions: 59 x 20 x 18mm Notes: Slight measurement deviations of 1–3mm may occur due to manual measurement Color variations may appear depending on monitor settings We strive to provide the best product and service; please with any concerns and we will assist promptly Package includes: 1 x Ground Loop Noise Isolator 1 x Audio Cable