Suitable for portable players, if you want to use it in the amplifier, please check it whether it is matched with the transformation equipment. otherwise it may cause the damage to equipment or make the equipment cannot be used. Cable is 8 shares, 3.8mm (8 x 0.9mm) 19 x 0.12mm cores silver-plated cable weaved Cable length is about 14.5cm - 15.5cm Silver Plated High resolving power, smooth sound transparent, clear and full of layered detail; IF moist, magnetic voice; full of powerful low frequency.