Just found this track by Scout and it's incredible. It features this awesome brassy sounding synth in one section and I'm wondering how he does it. It feels extremely room-y and it's definitely layered with something. Kind of feels like a reverb filter has been used on Serum of some type of comb filter to give it that hollowness.

Plays at 2:02 & 3:07.

https://soundcloud.com/lophiile/midnightdonuts

detuned saw with lots of voices, small echo chamber, high wetness ratio, minimal decay, chorus or stereo widening.