Audac WP225 Universal wall panel - Microphone, line & Bluetooth Receiver The WP225 is a remote wall mixer that can be used in combination with various AUDAC hardware (ARES5A, MTX series, AMP523 and more). It converts the signal coming from a stereo line-level audio source (such as a tuner, mobile devices, ... ) or balanced microphone to the level corresponding to the differential signal input making it possible to transfer high-quality audio over long distances between the wall panel and the loudspeaker, by just using inexpensive twisted-pair CAT5e or better cabling. On the front side of the wall panel, there is a 3.5 mm jack stereo line input connection available together with a balanced XLR microphone input, both provided with their own knob which allows the signals to be mixed together.