ACX (Audiobook Creation Exchange) Setup Explained: What Matters
So you’ve written a book, and now you want to hear it in your own voice — or someone else’s. ACX (Audiobook Creation Exchange) is Amazon’s platform for turning manuscripts into audiobooks, and it’s where most indie authors start. The setup process looks intimidating at first, but it breaks down into a handful of decisions you can make in an afternoon.
Here’s what you need to know before you create your account, and the exact path to get your book live on Audible.
What ACX Actually Does (and What It Doesn’t)
ACX is a marketplace that connects three parties: rights holders (authors or publishers), producers (narrators and studios), and retailers (Audible, Amazon, and iTunes). You upload your manuscript, choose how you want to produce it, and ACX handles distribution.
The key thing to understand: ACX doesn’t record anything for you. It’s the plumbing, not the talent. Your two paths are royalty share (you pay nothing upfront, the narrator gets a 50% cut of your audiobook royalties) or pay-per-finished-hour (you pay the narrator a flat rate per hour of finished audio, and keep all royalties). Most new authors start with royalty share because it removes financial risk — but it also means you’re giving up half your income from the audiobook, which can sting if the book takes off.
The platform is free to join. You’ll only pay if you choose the pay-per-finished-hour route.
Try Audible Free for 30 Days — Start your free trial on Amazon and get two free audiobooks.
Setting Up Your Account: The 10-Minute Version
Go to acx.com and sign in with your Amazon account. You’ll be asked for basic info: your name, tax information, and payment details. If you’re outside the US, you’ll need to complete a W-8BEN tax form — ACX walks you through it, but it’s worth having your tax ID handy.
One decision to make early: are you the rights holder? If you published through KDP (Kindle Direct Publishing), you likely own the audio rights. If you used a traditional publisher, check your contract — some publishers retain audio rights, and ACX will reject your submission if you don’t have the legal standing to publish.
Once your account is active, you’ll see a dashboard with a “Start a New Title” button. This is where the real setup begins.
The Title Setup: Metadata That Matters
When you click “Start a New Title,” ACX asks you to search for your book. If it’s on Amazon, it’ll pull up your existing listing. If not, you can create a new entry.
Here’s where you’ll enter your metadata: title, author, narrator (if you already have one), and a description. The description matters more than you think — it’s what appears on your Audible page, and it should match the tone of your book, not just copy-paste your Amazon blurb.
You’ll also need to specify your audiobook language and audience. This sounds simple, but it affects discoverability. If you’ve written a YA novel with crossover appeal, you’ll want to select the category that best matches where buyers actually browse, not where you dream of being shelved.
The last piece of this step is uploading your manuscript. ACX accepts DOC, DOCX, PDF, RTF, and TXT files. The manuscript is used for two things: the narrator’s reference and the automated quality checks that happen later. Make sure it’s the final version — if you upload a draft with typos, the narrator will read those typos.
Choosing Your Production Path: Narrator or DIY?
This is the fork in the road that determines everything else about your ACX experience.
Option 1: Hire a narrator through ACX. You’ll create a “Talent Search” listing that describes your book, its genre, and the style of narration you want. Narrators audition by recording a short sample from your manuscript. You listen, pick your favorite, and negotiate terms.
The quality range here is enormous. A narrator with 50 titles under their belt will sound dramatically different from someone with five. Listen to their samples carefully — not just for voice quality but for pacing, character differentiation, and how they handle dialogue. A great narrator can elevate a mediocre book; a mediocre narrator can sink a great one.
Option 2: Narrate it yourself. If you have a decent microphone, a quiet room, and a voice that doesn’t put people to sleep, this is viable. The barrier to entry is lower than ever — a $100 USB mic and some basic acoustic treatment can produce acceptable results. But be honest with yourself: narrating a full book is a marathon. A 70,000-word novel translates to roughly 7-8 hours of finished audio, which means 15-20 hours of recording time, plus editing and retakes.
Option 3: Record with a studio. ACX lets you list professional studios as producers. This is the most expensive route, but it’s also the most hands-off. Studios handle recording, editing, and quality control. If you have a budget and no technical skills, this is the safest path to a professional product.
The Audition Process: What to Look For in a Narrator
When you post a talent search, you’ll start receiving auditions within days — sometimes hours. Here’s what to actually evaluate when you listen:
Pacing. Does the narrator read at a natural speed, or do they rush through sentences? Listen at 1.5x speed, because that’s how a huge portion of audiobook listeners consume content. A narrator who sounds good at 1x can sound frantic at 1.5x.
Character differentiation. In a dialogue-heavy scene, can you tell who’s speaking without the “he said” tags? This is the hardest skill for narrators to master, and it’s what separates professionals from amateurs.
Emotional range. Listen to a scene with tension or sadness. Does the narrator convey it, or are they just reading words? A monotone performance will get your book abandoned within the first chapter, regardless of how good the story is.
Accent and pronunciation. If your book is set in a specific region, does the narrator handle the accent convincingly? Do they pronounce character names correctly? This sounds obvious, but it’s a common failure point.
One concrete example: the Bobiverse series by Dennis E. Taylor, narrated by Ray Porter, is often cited as a masterclass in character differentiation — Porter voices dozens of distinct AI personalities across the series, and listeners can identify each one instantly. That’s the level of skill you’re hoping to find.
Royalty Share vs. Pay-Per-Finished-Hour: The Math
This decision deserves more thought than most authors give it. Here’s the breakdown:
Royalty share: You pay nothing upfront. The narrator earns 50% of your net royalties (which, after Audible’s distribution cut, works out to roughly 20-25% of the list price). If your audiobook sells well, you’re giving up a lot of money. If it sells poorly, you’ve lost nothing but time.
Pay-per-finished-hour: You pay the narrator a flat rate — typically $100-$400 per finished hour for quality narrators, though top-tier talent can command $500+. A 7-hour book at $200/hour costs you $1,400 upfront. You keep 100% of royalties, but you’re betting that the book will sell enough to recoup your investment.
The hybrid: Some narrators offer “royalty share plus” — a reduced upfront fee plus a lower royalty percentage. This is a middle ground that works well when you have some budget but not enough to cover the full production cost.
A useful rule of thumb: if your book has an established audience (email list, strong Amazon reviews, a following from previous titles), pay-per-finished-hour is worth the risk. If this is your first book and you have no platform, royalty share is the safer play.
The Technical Requirements: What Your Audio Must Meet
ACX has strict technical standards, and they will reject files that don’t meet them. Here’s what you need to know:
- Sample rate: 44.1 kHz
- Bit depth: 16-bit (or higher)
- File format: WAV or MP3 (WAV is preferred)
- Noise floor: -60 dB or lower (meaning no background hum)
- Peak level: No clipping (distortion from recording too loud)
If you’re recording at home, the noise floor is usually the killer. A quiet room isn’t enough — you need to eliminate HVAC noise, computer fans, and street sounds. Many home recordists use a closet full of clothes as a makeshift vocal booth, which actually works surprisingly well.
The editing process is where most DIY narrators burn out. You’ll need to remove breaths (or reduce them), fix mistakes, and ensure consistent levels across chapters. Software like Audacity (free) or Reaper ($60) can handle this, but there’s a learning curve.
The Review Process: What Happens After You Upload
Once your audio is uploaded, ACX runs an automated quality check. This catches obvious problems: clipping, excessive noise, silence that’s too long or too short. If it passes, your title goes into a manual review queue.
The manual review is where human ears listen to your audio and check for things the automated system misses: mispronunciations, inconsistent pacing, background noise that’s audible but not technically “too loud.” This review typically takes 10-14 days, though it can be longer during busy periods.
If your audio gets rejected, you’ll receive a list of specific issues. Fix them and resubmit — rejection isn’t the end of the road, it’s just a hurdle.
Distribution: Where Your Audiobook Will Appear
When your title is approved, it goes live on Audible, Amazon, and iTunes. The default distribution is exclusive to ACX’s retail partners for seven years — this is the “exclusive” option that earns you a higher royalty rate (40% of list price vs. 25% for non-exclusive).
The non-exclusive option lets you distribute elsewhere (like Findaway Voices or directly to libraries), but you’ll earn less per sale on Audible. For most indie authors, the exclusive route is the right call — Audible dominates the audiobook market, and the higher royalty rate compensates for the lack of flexibility.
One thing to note: you can’t sell your audiobook directly on your website if you’re in the exclusive program. This frustrates some authors, but the trade-off is access to Audible’s massive customer base.
Common Setup Mistakes to Avoid
Skipping the audition process. Some authors pick the first narrator who auditions because they’re eager to move forward. Don’t. Listen to at least five auditions before deciding.
Uploading the wrong manuscript version. This happens more than you’d think. A narrator records 20 chapters based on an outdated draft, and you have to pay for re-records.
Ignoring the technical specs. You might think your audio sounds fine, but if it doesn’t meet ACX’s standards, it will be rejected. Test your setup before you record 50 chapters.
Forgetting about your book description. The description on your Audible page is what sells the audiobook. Write it specifically for audio listeners, not just a copy of your Amazon blurb.
Is ACX Right for You?
ACX is the most accessible path to audiobook publication, and for most indie authors, it’s the right choice. The platform handles distribution, royalties, and the legal framework, which saves you enormous time and headache.
But it’s not the only option. Findaway Voices offers broader distribution (including libraries, which ACX doesn’t reach) and lets you keep more control over pricing. Author’s Republic and Spoken Realms are other alternatives. If you’re willing to trade Audible’s massive reach for more flexibility, these are worth exploring.
For most authors, though, ACX’s simplicity and integration with Amazon make it the default choice. The setup takes an afternoon, the production takes a few months, and the result is a professional audiobook that reaches the largest audiobook audience in the world.
FAQ
How long does it take to get an audiobook approved on ACX?
The automated quality check takes a few days, and the manual review typically takes 10-14 days. In total, expect 2-3 weeks from submission to approval, assuming your audio passes without issues.
Can I publish an audiobook on ACX if I don’t have the book on Amazon?
Yes, but it’s more complicated. ACX can create a new title listing for your book, but you’ll need to prove you own the rights. Having the book on Amazon simplifies the process significantly.
Do I need to pay for an ISBN for my audiobook?
No. ACX assigns a free ISBN through Audible, which is what appears on your audiobook’s metadata. If you want to distribute outside ACX, you may need your own ISBN, but for the exclusive route, it’s not required.
What if my narrator does a bad job? Can I get a refund?
If you used royalty share, you’re stuck with the performance — there’s no refund mechanism for a narrator’s work. If you used pay-per-finished-hour, you can request fixes during the production process, but once you approve the final audio, the contract is complete. This is why the audition process matters so much.
Can I upload an audiobook I recorded elsewhere to ACX?
Yes, if you own the rights. You can upload finished audio directly to ACX without using their production tools. The same technical standards apply, and you’ll need to go through the same review process.
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