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⚠️ Artist appreciation post ⚠️

So stoked with the final festival artwork hand drawn by the amazing @dipayandas_arts

Stay tuned for future merch announcements and go follow his page for more awesome metal logos and artwork.

#flatlinefest #supportartists

⚠️ Artist appreciation post ⚠️

So stoked with the final festival artwork hand drawn by the amazing @dipayandas_arts

Stay tuned for future merch announcements and go follow his page for more awesome metal logos and artwork.

#flatlinefest #supportartists

Who the hell is behind Flatline Fest? Well, it's these two well-lit humans, Dave Otero & Chelsea Lowe.

Dave Otero is the mastermind behind Flatline Audio and has been producing, mixing, and mastering extreme metal as literally his only job for decades, which is sort of insane.

Chelsea Lowe is the weirdo behind these posts and the entreprenihilist behind FootClothes. She's a long time performer in both the metal and magic worlds and feels weird writing a post about herself in the third person. She works alongside the Dave to bring the business, the branding, and the puns.

Photography by @brock.snaps

@daveotero @mistressofmentalism

The Inaugural Flatline Fest - Two Nights of Elite Extreme Metal in Denver, CO

“I’ve collaborated with every band in this lineup in the studio over many years and have always wanted to put something like this together. The fest is a chance to celebrate those friendships in one of our favorite independent venues.” ~ Dave Otero, Producer

⚠️ Only 100 early bird tickets available. Get yours now at flatlinefest⛧com. ⚠️

Bands: @cattledecapitation @archspireofficial @allegaeonofficial @abortedmetal @cephaliccarnage @nuclearpowertrio (Live Debut) @thezenithpassage@inferi_official @itcosdoom @offeatherandbone @necropanther @clusterfuxdenver
Venue: @theorientaltheater
Sponsors: @metalbladerecords @brutalpoodledenver @footclothesofficial
Poster art: @dipayandas_arts
Producers: @daveotero @mistressofmentalism
#flatlinefest

Fewer than 75 two-day passes are available for Flatline Fest 2026.
VIP tables for Saturday are sold out.

Get yours while you can at FlatlineFest🎟️com

⚠️ Sponsor Highlight ⚠️
Providing the backline (shipping all the way from Germany) for this year's fest is our favorite Sonic Doom Device producer: Lichtlaerm Audio

We'll be featuring custom Lichtlærm Audio cabinets and their signature Prometheus amp. If you are not aware, this is insanely fucking cool.

Not only do they perfectly match the aesthetic we wanted for the fest visually, we are very particular about quality, and knew that these would deliver and far surpass expectations. As we are a festival presented by a music producer, there was no cutting corners in this arena. There is currently a waitlist for their Prometheus tube amps, but you can snag their highly-sought-after custom pedals on their website now.

Wanted to share this process video of the Flatline Fest merch and poster art from Dipayandas Art. Follow him here on instagram @dipayandas_arts for more super sick artwork. So. Many. Lines.

Handling the merchandising for this year's Flatline Fest will be none other than FootClothes. Is it because one of the promoters of Flatline Fest also owns a sock company?

Yes, that is precisely why.

But we'll be one of the only metal festivals with frickin' socks alongside some locally printed shirts (unisex AND female cuts) as well as a small handful of hoodies and patches, so we're going hard. Stay tuned for those announcements and while you wait, go buy some socks. Thanks.

Our next sponsor announcement: Metal Blade Records. @metalbladerecords

Flatline Audio has a long history with Metal Blade, and we’re honored to have them on board for the first Flatline Fest.

Represented on the lineup by:
@cattledecapitation
@allegaeonofficial
@nuclearpowertrio
@thezenithpassage

Our first sponsor announcement! While you're at the fest, do not fear hunger.

We'll have The Brutal Poodle food truck on hand for all your culinary desires. Support our favorite local metal restaurant while they support their local metal scene. It's like a symbiotic ecosystem of sweaty metalheads and those providing them with energy in the form of elevated bar food. Truly beautiful. 🥲

Check them out next time you're over on South Broadway!

Night two of Flatline Fest kicks off with thrashy death metal from long time Denver legends, Necropanther.

That's right you fuckers (endearingly) - we're STARTING OFF WITH GOD DAMN NECROPANTHER so take some ibuprofen and get there early.

Tickets at flatlinefest💀🐈‍⬛com

We're starting off night one of Flatline Fest with local hardcore crossover legends, Clusterfux.

Thirty years of punching us in the face with sound and we are still wanting more.

Sign up to get your face punched (with sound, probably) at Flatline Fest👊🏻com

In this Endless Well of talent, Sunday boasts the presence of Denver legends In the Company of Serpents.

Did I just realize the graphic designer made the n in their logo weird? Yes. Did I have the skills to fix it? No. But I am good at marketing words...

So behold this limited-edition, one-of-a-kind never-before-seen version of timeless art plastered across a beautiful crimson-toned rendering of the band's facade. While it lasts.

Tickets at flatlinefest🐍com