Vocalist Dylan Walker says those collaborations had an impact on the creation of Trumpeting Ecstasy, elaborating: "We might not have been willing, or even able, to do some of the things that we were looking to do with the new record.

The EP notably includes a remix from Ben Chisholm, bassist for the gothic metal band Chelsea Wolfe.

Writing for Exclaim!, Denise Falzon gave the album a perfect 10/10, concluding her review by claiming, "Trumpeting Ecstasy is the culmination of Full of Hell really coming into their own, exuding the confidence that comes along with refining their stylistic approach and honing their sound into something that is completely theirs.

"[3] Zoe Camp of Pitchfork gave the album a 7.7/10.0, stating, "Although Full of Hell spend the majority of Trumpeting Ecstasy examining their usual tricks through an expanded prism, their overall approach remains the same.

"[4] Both reviewers gave praise for Nicole Dollanganger's pop-influenced guest vocals on the album's title track, "Trumpeting Ecstasy".