From THE_STRIP to THE_STRIP 3: Why I Rebuilt My Channel Strip From Scratch

In August 2023 I released THE_STRIP. In March 2025, THE_STRIP 2. In August 2026, THE_STRIP 3.

Same name. A completely different plugin.

THE_STRIP 3 is not an update. I rebuilt it from a blank page.

So if you read about THE_STRIP or THE_STRIP 2 anywhere, including any criticism, you read about an older plugin. This is the whole story: what the first two did, what you asked for next, why I started again, and what THE_STRIP 3 does today.

What was THE_STRIP (2023)?

THE_STRIP was my first channel strip. The idea: a whole mixing chain in one plugin that sets itself up for the track it sits on.

You told it what the track was and let it listen. It set up the whole chain for that track, and you could change anything after. In 2024, version 1.3 added a free MINI version for the tracks that only need the basics.

A lot of you loved it. It's the plugin that started all of this.

What was THE_STRIP 2 (2025)?

THE_STRIP 2 came out in March 2025 and took the idea further. It had 45 profiles, from lead vocals to drums to the mix bus. You picked one, played your track, pressed LISTEN, and it set up its chain for that sound. A few weeks later, version 1.1 let you build your own profiles from reference tracks.

Again, a lot of you made it part of your sessions. I'm grateful to every one of you who did.

What you asked for next

Every plugin I make gets better because of what you tell me. With THE_STRIP 2 you told me a lot, in emails and in one long, very critical video review in 2025.

You wanted an EQ you can boost by hand. A full gate. Profiles for overheads and toms. A polarity switch. A manual. More control without a listen first.

And the big one: strips that know about each other. To hear that your guitars are burying the vocal, a strip has to know there's a vocal.

That one wasn't a missing feature. THE_STRIP and THE_STRIP 2 were built to set up one track at a time, and they did that job. Hearing the whole session needed a different foundation.

So in June 2026 I started again from a blank page.

What I kept

Starting over didn't mean throwing away what you loved.

• The idea. One strip that listens to your track and builds a chain you can change.
• The profiles. Pick what a track is, and the strip knows how to treat it. There are 81 now, and you can still build your own from your reference tracks.
• The companion. MINI is back, with zero latency and part of the same mixer.

Everything else is new.

THE_STRIP vs THE_STRIP 2 vs THE_STRIP 3: what changed

In plain words:

• Unlike THE_STRIP 2, THE_STRIP 3 knows every other track in your session. Every strip connects into one mixer, with no routing.
• Unlike THE_STRIP 2, THE_STRIP 3 lets you decide who carries the song, and makes room for it while it plays.
• Unlike THE_STRIP 2, THE_STRIP 3 has a six-band EQ you can boost or cut by hand, and a full gate with sidechain.
• Unlike THE_STRIP 2, THE_STRIP 3 lets you drag its modules into any order.

What you asked for, and what THE_STRIP 3 does

• An EQ you can boost by hand. Six bands that boost or cut by up to 18 dB: bells, shelves, high-pass and low-pass. Any band can turn dynamic, so it only works when the sound needs it.
• Strips that know about each other. Every THE_STRIP 3 in your session finds the others the moment you load it. Press M and your whole mix is in one window.
• A say in what fights what. In UNMASK you rank your tracks. Whatever sits lower steps back only where it clashes, and only while the winner plays.
• A full gate. Threshold, range, attack, hold and release. It listens to the band you choose and takes an external sidechain.
• More control over transients. More or less attack and more or less body, up to 12 dB each way. Solo either part while you set it.
• More compressor characters. Clean, a smooth vocal glue and a punchy drum-bus snap. And the threshold tells you how many dB you're taking off.
• A clear view of what each module does. Every stage shows what it did to your level, right next to it. Bypass plays at the same loudness, so you hear the difference in tone, not in volume.
• Polarity and drum mics. A polarity flip on every strip, and PHASE ALIGN lines up every mic of a kit with one press.
• Profiles for overheads and toms. OVERHEADS, TOMS, ROOM MICS and RIDE / CYMBALS, three kinds of kick and three of snare. 81 profiles in all.
• A smart first guess. THE_STRIP 3 guesses what a track is from its name and its sound before you pick anything.
• The whole session in one go. AUTO-MIX sets up every track in one run.
• A manual. A full one, inside the plugin and online.

You decide how much it does

This is the part I care about most.

• All by hand. Every module starts switched off. Build the chain yourself, in any order.
• One listen. Press LISTEN on a track and it builds the chain from what it hears. Change anything after.
• One button for the session. AUTO-MIX sets up and balances every track, then your buses, then your master. One undo takes the whole run back.
• You decide who carries the song. Drag your tracks into order. That's not an engineering fix. It's the most creative decision in a mix.

Move a fader after AUTO-MIX, and the next run keeps your move. And the strip never changes your audio on its own.

How I tested THE_STRIP 3, and why AI changed everything for me

AI changed how I build plugins. Not by writing the code. By making simulations and testing possible at a scale I never had before.

For THE_STRIP 3 that mattered more than ever. When every strip knows your whole session, one move on one track can change every other track. That's a lot to test.

Whole sessions, simulated

So I built a simulator. It runs whole sessions of real THE_STRIP 3 strips, connected the way they connect in your DAW, and checks what the mixer, UNMASK and AUTO-MIX do with them. It now runs more than 160 test sessions.

In one round it found five real bugs. All five are fixed.

Real recordings

Simulated sessions are tidy. Real ones aren't. So I ran AUTO-MIX on 13 real multitrack recordings, raw, one file per mic.

The first run mistook 26 tracks for buses. A lead vocal "contains" its backing vocals, and drum mics hear each other, so the mixer thought one track was carrying the others. Since version 1.5, on the same 13 sessions, it's zero.

What testing caught

• A section that drowned the vocal. Six rhythm guitars, each at the right level for a guitar, came out about 8 dB louder together, right over the lead vocal. Now a stack like that comes down together, and the balance inside it stays yours.
• A breakdown that set the level. Press LISTEN during a quiet breakdown, and a level set for the breakdown is wrong for the chorus. Now the strip remembers the loudest section of the last minute.
• A frozen DAW. Removing one strip from a session with 13 of them could freeze the DAW. It was fixed on launch day.

The machine measures. My ears set the targets.

How loud the drums, the bass, the vocals and the instruments sit against each other after AUTO-MIX isn't a number a machine picked. I set it by listening. The tests make sure every version still lands there.

When it's doing nothing, it does nothing

With every module switched off, THE_STRIP 3 is flat to within 0.0016 dB. All fifteen modules running cost about 3.4% of one processor core on an Apple silicon Mac.

In September I published the one thing I didn't love about my own EQ: bells near the very top of the spectrum came out a little narrower than the knobs said. Ten days later, the 1.2 update fixed it. The bells keep their shape right up to the top now, and your saved settings load unchanged.

Measured, not promised. The full numbers are in the measurement report, and the story behind them is in Channel Strips Are A Compromise. THE_STRIP 3's 15 Modules Are As Pristine As It Gets.

Two different kinds of AI

One thing to keep apart. The AI I test with is a tool on my desk. It doesn't ship inside THE_STRIP 3.

What ships is a different kind. THE_STRIP 3 recognises what's on a track with a model I built from measurements of real reference recordings, from lead vocals to full mixes, and tested file by file. It runs on your computer.

It doesn't write, compose or generate anything. It listens, compares, and sets up a chain you can change.

Language AI, the kind that writes text, does two small jobs: it reads the description you type when you build your own profile, and it runs the built-in assistant that answers your questions.

Five updates in five weeks

THE_STRIP 3 shipped as version 1.0 on August 25, 2026. By October 1 it was on version 1.5.

• 1.1: twelve new profiles, and PHASE ALIGN learned how a drum kit is mic'd.
• 1.2: your own profile library, a mode for a vocal over a finished beat, and stacks of parts that come down together.
• 1.3: type an instrument to find its profile, and AUTO-MIX balancing drums, bass, vocals, instruments and FX against each other.
• 1.4: THE MIX MAP, your whole session laid out as a room.
• 1.5: a loudness meter that reads to the broadcast standard, and a round of fixes.

Every one of them was a free update. If something doesn't work on your setup, write to me at philspeiser.com/support. I answer support myself.

Want to get more out of it? Start with the one minute that makes AUTO-MIX nail your mix.

I own THE_STRIP or THE_STRIP 2. What happens now?

It stays yours and keeps working. Thank you for mixing with it.

THE_STRIP 2 is no longer sold. As an owner of either one, you'll find an upgrade price for THE_STRIP 3 in your user area.

The channel strip I want now

THE_STRIP 2 was a strip for one track. THE_STRIP 3 is a strip for your whole session.

THE_STRIP and THE_STRIP 2 got me here. So did every one of you who mixed with them, loved them and told me what you wanted next.

So if you read anything about THE_STRIP 2, good or bad, that was version 2. Everything on this page is THE_STRIP 3, version 1.5, October 2026.

I can't wait to hear what you mix with it.