bridge pickup white noise

[nezvers]

Maybe someone know what's up.

I bought Agile 8 stringer and fixed problems from changing neck bow and intonation after traveling from US to Latvia. But problem I can't find fix is bridge pickup having low white noise background noise (not grounding buzz). I changed stock passive bridge into Seymour Duncan Blackout which almost got rid of it, but using hi-gain it noticeable again (not ruining joy of playing, but when stop playing it's noticeable again). Neck pickup has totally no noise and I've tried to put wires straight from pickups + battery to guitar cable (bridge ground wire is not necessary for these p-ups, but still doesn't change anything (and bridge ground wire is working).
Considering that stock p-ups had same noise but louder I don't know what to do to get it out.
I haven't found any info on internet because everything is about buzzing not white noise.

Here is sample of pickups (clean bridge than neck, hi-gain bridge than neck).
Neck is still stock agile cepheus passive and that buzz will get attention next after fixing bridge p-up.

 

[deLuther]

Active pickups always have audible white noise due to average Op Amps in internal preamps. Low noise Op Amps always have significantly higher power consumption, so usage in guitar is problematic due to short battery life.
I.e. active pickups have noise picked by coils plus noise from preamp and due to amplification (for example EMGs have around 15 db). Coils can be comparable to passive pickups like PAF.
SD Blackout is no better than EMGs - it have Op Amp with noise similar to Op Amps used in EMGs and additional differential cascade from two transistors.