Converting to 16 bit 48Khz mono is a good idea since it’s what the AR sample engine uses and in the process faulty WAV file headers are fixed.

At least with earlier OS versions setting the midi port configuration to USB only (and not USB+Midi) seemed to help to avoid problems.

With the latest version of C6 and the AR firmware sample transfer works better for me but I still have a problem with the transfer just stoping if I transfer more then one sample at the time. Like I set up 30 samples and start the transfer and after what seems totally random number of transfers it stops.

The main issue for me is that sample transfers take a lot of time. Like crazy long time. The turbo mode is 8 to 10 times faster then regular midi transfer but still very slow compared to file transfer to a USB device.

I hope Elektron have plans to make the AR mount as an USB drive or something like that to give us better transfer rates.