the stealth master, funny enough, doesn't know jack about stealthing
but, for my $00.02
depending on how stealth you want to go, there are many options
akg 390
dpa 402X
schoeps mk(x)
Audix 1290s
many many options, most of these will need some type of phantom power.
some decent stealth boxs (preamps, adc, and p/s), some providing power, some not
SD MP-2 &Mixpre
PSP-2 and -3
Sonosax box
Deneke AD-20
Sony modSBM-1
these may or may not be stealthable. Depends on how much you can put down your crotch