It is funny that @amirm did not say a single thing about the VU meters.If this didn't have the VU meter's, I'd behead a panther.
Especially since the Douk VU3 @$140 got its own ASR review.
Buy it for the VU meters, and feel happy that you gotta a bargain [?] price on the SPL Phonitor for only $2859.
That way, PETA don't come after you for animal cruelty or sumsuch!
The test results show increased noise-floor activity, correlated or otherwise.
Are these noise spikes related to weak power supply design/regulation/isolation?