A first-time customer sent me a straight Suno download this month with one goal. They just wanted to hear how much of a difference mastering could make. No reference track, no list of fixes. It's one of the best reasons to order, and it deserves a fair test.
Most people run that test the wrong way. They play the original, then the master, and the master wins because it's louder. That tells you nothing.
Louder always wins the first ten seconds
Your ears hear a louder version as fuller, brighter and better, even when nothing else changed. A master is usually louder than the raw export. So a quick back and forth mostly tests volume.
It's worth saying what my customers actually ask about. Nobody asks for louder. They ask whether it holds up in the car, on their phone and on a laptop. That's the test that matters.
How to run a fair comparison
Match the loudness first. Turn the master down until it sounds as loud as the original. A loudness meter makes this exact, but your ears get you close. Only then compare.
Use the same device and the same volume. Don't play one on headphones and the other in the car.
Switch at the same spot. Pick one section, usually the first chorus, and jump between the two right there. Memory for sound is short.
Listen for specific things. Is the low end clearer or just bigger? Does the vocal sit forward without getting harsh? Does the top end sound open or brittle? Does anything feel smaller than before?
Then take it on the road. Phone speaker, earbuds, car. Play both at matched level. The master should hold together everywhere. The raw export usually falls apart somewhere.
What a good master should and shouldn't do
It should sound like your song, finished. Clearer, more even, ready to sit next to other releases. It shouldn't sound like a different song, and it shouldn't sound squashed. If the master only wins when it's louder, something's off.
My note on doing a reference listen covers the same idea from the other side, before mastering starts.
Why I send a Dossier with every master
A fair A/B tells you what changed. The Mastering Dossier tells you why: what I measured, what I did about it, and what I left alone. Between the two, you're not taking anyone's word for it, mine included.
If you've never had a song mastered, this is the cheapest way to find out whether it's worth it for your music. Send one song and run the test.
Josh, Founder, JG BeatsLab
Want this handled on your track? I master AI-generated music by hand, one song at a time, and every master comes with a Mastering Dossier that shows what I did and why. Book mastering or take the 3-minute scorecard to see where your workflow stands.
