The Sony DWZ-B30 GB is a digital and wireless guitar/bass radio system in 2.4 GHz band with 24-bit resolution. This set includes the ZTX-B01 body pack and the ZRX-C30 receiver in stompbox design. The frequency response of the DWZ-B30 GB is between 10 and 20,000 Hz it is suited for bass applications. The body pack is made of robust and light-weight metal. With Sonys special frequency management processes it is able to safe the System before distortions thru other 2.4 GHz equipment. No requirements of registration and license needed worldwide for this system.