paavi@pushistik:~$ xwax -m 5 -r 48000 -a u46mk2_pair1 -a u46mk2_pair2 -l ~/music/
xwax 1.2 (C) Copyright 2012 Mark Hills <mark@pogo.org.uk>

This software is supplied WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. This is
free software, and you are welcome to redistribute it under certain
conditions; see the file COPYING for details.

Initialising deck 0 (u46mk2_pair1)...
ALSA hw_params_set_buffer_time_max: Invalid argument
Buffer of 5ms may be too small for this hardware.
Failed to open device for capture.