The HD-44AK is professional 4×4 matrix routing switch. Supporting (4) HDMI Inputs and (4) Auxiliary Audio Inputs. Output supported (4) HDMI and (4) SPDIF audio. The HD-44AK is based on the HDMI standard and supports full resolution HDMI Video with embedded EDID, With a signal bandwidth of 340Mhz, there is no signal degradation. High Definition Digital signals can be selected and distributed to any (4) Inputs to (4) outputs. The Switcher is certified as being fully CEC , ARC and HDCP 2.0 compliant, full HD 4K2K HDMI V1.4a 3D formats, data rates up to 6.75 Gbps. Supports UXGA/WUXGA/DVI 1920×1200 resolution to any HD displays. The HD-44AK has one analog audio input per channel. If your source is DVI, you can insert an external audio signal to embed onto the HDMI signal. There is one digital audio (S/PDIF) output per channel that will de-embed the audio signal. This feature allows direct connection to an audio amplifier/receiver without the problems of EDID/HDCP. The audio signal will remain with the video on the HDMI cable. The EDID management can be selected between seven (7) different modes. Control is provided via Front panel push buttons, IR remote, RS-232 or TCP/IP (not a web-browser). An RS-232/Ethernet Windows GUI software program is provided for matrix routing control (Windows only).