Eton Soulra NSP400B - Manual (Page 9)

Press the button to turn on Bass Boost.
The MODE button switches between the iPod and AUX-in if there is a signal input from the
port of the AUX-IN. The iPod signal takes priority if there is an iPod signal and an AUX-in signal
at the same time. If the AUX-in signal is existent (aux_det), the switching function of the MODE
button is available.
Pressing the button switches from play to pause for the iPod.
9
SOULRA USER MANUAL
BASS BOOST FUNCTION (SW2)
MODE (SW5)
PLAY/PAUSE (SW6)