If you are experiencing reduced audio output when using the Looper on the HeadRush Pedalboard, this is likely due to the current Looper parameter settings. There are two settings which can effect the Looper output.
Mix - This settings controls how much of the Looper’s signal you hear in the outputs.
Feedback - This controls how much of the Looper’s signal is routed back through it when recording another layer.
If your Looper output is set at the same volume when repeating but it sounds low over your playing, then you need to increase the Mix value.
If your Looper sounds correct on the first repeat but begins to sound lower on every repeat, then you need to increase the Feedback value.