Alternatively, analog stereo audio can be transmitted to headphones or active speakers, or digital 2.0/5.1 audio via SPDIF Toslink. The audio EDID can be manually changed using the audio mode switch. With the audio mode switch, you can set the audio format provided by the HDMI source, provided the audio track is available. Note that the same audio format applies to all outputs. Most TVs cannot process 7.1 audio and will remain silent. For HD audio, output via SPDIF or analog is not possible. HD audio formats such as Dolby TrueHD and DTS-HD can only be transmitted via HDMI. Digital stereo (LPCM 2.0) or 5.1 audio (Dolby Digital / AC-3 or DTS) can be transmitted via SPDIF Toslink, depending on the source material. Digital audio formats do not have volume; this can only be controlled at the audio amplifier. Therefore, with a SPDIF connection, you can only adjust the volume on an AV receiver or soundbar. With an HDMI audio connection, indirect volume control is possible if the devices support HDMI-CEC. Switching between inputs occurs automatically (auto-switching) or manually via remote control or control button. When you turn on a connected HDMI source, it automatically switches to that input. When you turn off the HDMI source, it switches back to the previously used HDMI input. Some devices do not turn off their HDMI output in standby mode, so the switch always receives a signal from an active device. To avoid this, you can disable the auto-switching function. ARC (Audio Return Channel) for outputting TV audio via the digital output is supported, but there is no output at the analog output.