Mastering for Artists Who Want More
We Translate Mixes Into
Streaming-Ready Masters
Send your mix. Get back a master that translates everywhere — earbuds to club systems.
Mastered for artists who want more, including
Why Jpec Mastering
Make It Sound Undeniable
No algorithms. No outsourcing. Just one set of ears — mine — on your record until it's right.
Translation Across Every System
Checked on headphones, car stereos, laptop speakers, and club rigs — so it holds up wherever it's played.
Personal, Hands-On Process
You're talking to Jpec, not a client manager. Real feedback, real revisions, until it feels right.
Fast, Reliable Turnaround
You'll know your timeline from message one — no chasing, no guessing, no radio silence.
The Process
From Rough Mix to Release-Ready
Submit Your Project
Drop a link to your mix below, plus a reference track or two that nails the vibe you're chasing.
Get Mastered
Jpec masters your track by hand — balancing tone, loudness, and punch until it holds its own next to anything in your playlist.
Receive & Release
Final masters land in your inbox, ready to drop anywhere — streaming, vinyl, wherever you're releasing.
About Jpec
Hi, I'm Justin — Jpec.
I'm a producer and audio engineer based in Wellington, New Zealand. I started my music journey back in 2016, and I've spent every year since chasing one thing: audio excellence.
My dad taught me a simple rule — if you're going to do something, do it well. That's the standard every master gets held to. My job is to help you hear your music the way you always imagined it: polished, powerful, and ready for the world.
Start Your ProjectGoogle Reviews
The proof's in the playback.
A few words from people who've sent me their mixes.
The clarity, depth, and overall polish are beyond what I imagined. He's really taken my music to the next level.
Shivash M.I can easily assure that you will be impressed with your final result, he does not disappoint.
Ivan P.Justin has been an amazing practitioner to work with and is an amazing person to bounce ideas around with.
Rio T.The masters that I received back were everything I was after and more.
Keith A.Quality ear, understands what you're looking for. Really professional on all fronts.
Dexter G.Impeccable attention to detail and takes his craft extremely seriously.
DonellBest person for the job — real down to earth and listens to what you have to say.
Chase W.The clarity, depth, and overall polish are beyond what I imagined. He's really taken my music to the next level.
Shivash M.I can easily assure that you will be impressed with your final result, he does not disappoint.
Ivan P.Justin has been an amazing practitioner to work with and is an amazing person to bounce ideas around with.
Rio T.The masters that I received back were everything I was after and more.
Keith A.Quality ear, understands what you're looking for. Really professional on all fronts.
Dexter G.Impeccable attention to detail and takes his craft extremely seriously.
DonellBest person for the job — real down to earth and listens to what you have to say.
Chase W.Good to Know
Frequently Asked Questions
Every genre — though most of what lands in my inbox is hip hop, R&B, and pop. Not sure you're a fit? Just ask.
Send 24-bit WAV files at your project's original sample rate, starting at the beginning and exported through the song's full cycle range. Turn off stereo-bus processing (you can include both processed and unprocessed versions), and leave -8 to -16 dB true-peak headroom where possible; -2 dB is still workable.
Each song includes three free rounds of master revisions. Any further revisions are billed at $40 per hour.
Turnaround depends on current bookings. Once I hear from you, I'll give you a clear timeline — and if you're on a tight deadline, just flag it in the form below.
Pricing depends on your project — track count, format, and turnaround. Submit the form below and I'll follow up with a quote.
Start Your Project
Let's Make It Undeniable
Quick form, no fluff. I'll get back to you fast to talk timeline and pricing.
Thanks — that's in.
I'll get back to you as soon as possible to talk next steps.