Free Mastering Samples

There are many "so called" mastering studios on the Internet that claim they know how to master, but cannot! Why take a chance? Ive heard too many horror stories from my clients and I don't want to see you get ripped off and taken advantage of. This is why I offer free a mastering sample for all my potential first time customers. We will do the first 30 to 60 seconds of your song for free. No strings attached and no hidden fee's.


  • Your audio file must be named with your full name, then a dash and your email address. It should look like this: John
  • The maximum peak level should not go above -3dB on your master bus (mix bus). Anywhere from -15dB to -3db peak is perfectly fine.
  • There should not be any compression, limiting, dither and Eq on your master bus.
  • No MP3'sWe accept wave files and AIFF files. MP3's degrade the sound quality. If all you have is an MP3, then you will need to pay for the mastering of your song.
  • Don't convert your file to another bit rate and sample rate. Keep it the same. If your project is at 24bit and 44.1kHz, then that's what you send us.
  • Send the full version of your song

PLEASE NOTE: Failure to comply with these guidelines will result in rejection!

To begin, just complete the 2 steps below. The Turnaround Time can be anywhere from 1 to 5 days. 

Free Mastering Request Form - Step 1

Upload Your Song - Step 2

Click the SEND IT box to upload your song to me. This is a safe and secure FTP server. Only CJ Jacobson will receive your file.



"CJ, ounce again, thank you for doing a great job. This was known as the Doomed Album because it looked like it was never going to be completed. But, NOW IT IS! and it packs a huge punch. Thanks a lot, or as we say in Liverpool - 'ta la' (translated as 'thanks lad)"

Stephen Fleming of Le Emu tavern

"Thank You, I listened to the songs and it came out perfect. You did a hell of a job from what I heard. I look forward to doing more business with you in the future. Thanks."

Javi & Deandre

You really did a great job. Its out on itunes now. Many thanks for the excellent mastering job you did CJ - We will be back for our next album"

Robert Landry Producer Of Julia Pessoa

Darryl Anthony - Free One

"Great job! Punchy, full, crisp sound and all songs at same level. I burned a CD and played it back through a small stereo system. Wow! What a difference! It was a fast turn around and I appreciate the updates at each stage of development."

Darryl Anthony

Ross Cooper - Beyond Pleasure Principles

"Thanks a lot CJ, You've done a perfect job here - it's everything I'd hoped for. Insanely fast turnaround time too haha! This is perfect across the board. I knew I could rely on you to bring out the power/dynamics how I wanted. Have a great Christmas & all the best"

Ross Cooper