I am seeing warp around happening due to overflow when doing the following. parec -r --device=alsa_output.pci_8086_269a_sound_card_0_alsa_playback_0.monitor output.raw --format=s16le --rate=44100 --channels=1 paplay --format=s16le --rate=44100 --channels=2 if i use parec with the same configuration as the sink that I am playing the wave file on, then there is no overflow/wraparound. It seems to be a problem with the remapping of the channels from stereo to mono. Is there an additional gain stage applied in this remapping that might be causing this? I am using pulseaudio 0.9.14 Thanks