The Shelf
Try it first. Pay only when you know what it's worth.
Most studios ask for your money before you know what you're getting. Everything ABA sells, we give the key parts of away free first: the tools, the process, the Repair Book's free pages and the Middle C Keyboard. Use them on your own mixes. If they work, the three paid books go deeper.
Free · no account, no email
The four tools. They measure; you decide.
ABA Pocket Check
Where two to four performances fight for the same space, in frequency and in time. Kick and bass, a guitar on top of a vocal, a double that lands late.
ABA Phaze Check
Whether the mics and DIs on one source line up in time and polarity, before you blend them.
ABA Compare
What really changed between two mixes, heard at the same loudness, with a blind test behind doors.
ABA AudioVibes
The finished mix, read the way a streaming service and a trained ear read it: loudness, peaks, balance, and what to fix first.
Free · read it, keep it
The process, the first repairs, and the keyboard.
The Middle C Keyboard
Find middle C and A440, play any of the 88 keys, and read its frequency and MIDI number. Switch Overtones on and a note's harmonic stack lights up on the keys. It runs in your browser, with no install, and it sends us no data.
Produce the Record
The ABA production process, written down: how a record is built one milestone at a time, and why the order matters.
The Repair Book, free pages
The worst problem each of the four tools catches, fixed in full, plus the chapters that explain the tools. No account, no email address.
The ABA Master Test
What each plugin on your master is actually doing: the client's file, your full chain and the minimum, measured with the four tools and picked blind.
Paid · when you want the whole thing
The three books that go deeper.
You've seen the key parts free. These are the complete versions, sold through Payhip, our checkout partner. Buy once; every new edition is free to you.
Back to Middle C
You’ve heard of ear training. This is eye training: every frequency on a key you can see and point to. The kit: the booklet, the Middle C Keyboard with its Overtones switch, the fold-out frequency map and the song log.
The ABA Toolbox Repair Book
One page for every finding that isn't a pass, from all four tools: what it sounds like, why it happens, the most likely fix, and how to check it.
The ABA Playbook
How a song becomes a record, session by session. You can buy the plays. The skills are earned in the studio. Inside: all nine milestones, their tasks, forms and checklists, the way the studio runs a production from the first call to the final mix.