I am very sorry to hear about your brother.

Here's an image of my switch. smile

[Linked Image from i.postimg.cc]

The boost mode adds about 6dB of gain between 55Hz and 85Hz. 6dB of gain is 4 times the output of the linear mode. That is the mid-bass region by the way. Boost will give you more snap and punch in the mid-bass.

Thanks for letting me know about the 350.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated