AKG DMS 70 QUATTRO VOCAL/INSTRUMENT SET 2.4 GHz digital wireless system, genuine product with manufacturer's warranty This item is a genuine, brand-new, unused product, but has been opened for operational checks. It comes with a 1-year manufacturer's warranty from Hibino. Includes a 1U rack mount kit and a cable for connecting to a bass or guitar. An optional ear hook microphone is also included as a service. This is a special price, so please consider it. (We are selling two sets this time, so please refer to the other listing as well) - Features - A set including a 4-channel receiver, one handheld transmitter with a dynamic supercardioid microphone "D5", one bodypack transmitter, and an ear hook microphone "C111 LP". A 2.4 GHz digital wireless system that allows for easy and stable operation of multiple channels. Type: Digital modulation Frequency: 2.4 GHz band Maximum simultaneous operation: 8 waves *Up to 8 channels can be operated simultaneously with 2 x 4-channel receivers.