The input volume is reduced automatically to an appropriate level when excessively large signals come in. This allows recording level setting to be performed easily. The recording level can be raised manually if required."
It then proceeds to give this "tip" which has me confused:
When recording live performances, for example, test for peak reduction may be performed before actual recording. Select the peak reduction mode in recording standby, and maximize the recording level. As a test performance is given subsequently, the input gain for recording is reduced to an appropriate level to meet the input signals, and an optimum recording level for the performance is set. Recording will be stored at this recording level if this mode is disabled before starting recording. Otherwise, the recording level will continue to be controlled automatically during recording. It is also possible to store the recording in the limiter mode after automatically setting the recording level in the peak reduction mode."
So how would you know if your gain is optimized if this thing is on and reducing an over-gained signal? What if signal levels in a recording environment/performace drop after a while? Then your gain would be too low, no? I can see perhaps setting your gains with this thing OFF, then turning it on afterwards, but then you can suffer the same fate if SPLs rise and drop. Seems a limiter would be a better choice.
So, am I missing something obvious here? Is this a half compressor/AGC? Is this really a useful tool somehow? I just don't get it. Thanks for your input (no pun intended) on this.