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LASTLVL Mastering Technology™

Guarantee Claim Received

Thank you for submitting your files.

We’ve received your LASTLVL master, Preferred Master, and claim details. Our next step is a careful, gain-matched comparison and review.

What Happens Next

  1. Eligibility Check We quickly confirm that your claim meets the LASTLVL Guarantee rules (same mix, proper WAV files, within the 48-hour window, etc.).
  2. Gain-Matched A/B Evaluation We compare the LASTLVL master and the Preferred Master using gain-matched A/B listening to remove loudness bias.
  3. Up to 2 Revision Attempts If your claim qualifies, we’ll create up to two alternate masters in an attempt to match or beat the Preferred Master.
  4. Final Decision & Outcome You’ll receive an email with either revised masters and notes, or a refund decision if we determine we can’t beat or match the Preferred Master.

Timeline & Communication

  • You can expect an initial response or update within 3 business days from now (often sooner, depending on current workload).
  • All updates will be sent to the email address you used when placing your original mastering order or submitting the claim.
  • If you don’t see an email, please check your spam or promotions folder and mark messages from LASTLVL as safe.

Please remember: the LASTLVL Guarantee is not a 100% satisfaction guarantee — it specifically applies to matching or beating another master of the same exact mix, under the rules described in the official terms.

Need to Add or Clarify Something?

If you need to clarify anything about your claim (for example, notes about translation, playback systems, or references), you can reply directly to the confirmation email once you receive it.

You can also reach out via:
Instagram: @lastlvlmastering
Email: [email protected]