Home / ELECTRONIC / Ground Loop Isolators Laptop De Hummer Product Description Booster Adaptor for In-car Amplifiers. Converts high level output from the car stereo to a low-level input for in-car amplifiers, while providing ground loop isolation. Helps revove unwanted hum and buzz from your car speakers. Dimensions (mm) 60x33 Weight (kg) 0.064 Impedance (Ohms) 4 Frequency Response (Hz) 40-32000 Our Order Code: B070A Specifications Product Code B070A Weight 0.5kg Delivery & Returns Booster Adaptor for In-car Amplifiers - B070A Item in Stock Product Code B070A Booster Adaptor for In-car Amplifiers. Converts high level output from the car stereo to a low-level input for in-car amplifiers, while providing ground loop isolation. Our Order Code: B070A £8.50