Audio Mastering & Acoustics


  1. New customers
  2. Turnaround time
  3. Ordering process
  4. Price list
  5. Scope of service
  6. Payment
  7. File formats
  8. Mix preparation
  9. Mix critique
  10. Attended sessions

New customers

  • The minimum order for new customers is 3 tracks for the first order. Subsequent orders are free of this minimum.
  • The first order must be paid in advance

Turnaround time

  • The turnaround time for any project is currently “around one week” excluding mix critique considerations and revisions.
  • If you require a project to be mastered very quickly because of some kind of genuine urgency, every effort will be made to accommodate this

Ordering process

New customers should first introduce themselves via email. Regular clients are free to enjoy the streamlined order process which consists of simply sending mixes via wetransfer without additional communication. The masters will be sent back to you when ready, or mix feedback given, and the order will be added to your account to be invoiced later. When using this approach, a follow up email should be sent if no download confirmation email from wetransfer is received within 48 hours of upload.

Price list

  • Normal stereo mastering: 40€ per track
    • No additional fee when specific stems have been asked for
    • Additional versions of same track: half price
  • Stem mastering of up to 8 stems of your choice: 60€ per track
    • Cost per additional stem: 5€
  • DDP: 40€ per disk
  • Vinyl Cut: Please ask for a specific quote

Scope of service

  • The cost of all mastering services offered represent the fee to initiate work on a track, up to the point of delivering the initial master. This covers the administration work, studio time, listening to mixes, potentially providing mix critique or other advice and producing and delivering one master inline with the best judgement of the engineer. It does not cover any subsequent revisions however subsequent revisions are almost always granted at no extra cost at the engineer’s discretion. If the client requests a number of revisions deemed excessive or makes any requests after receiving the initial master deemed to be unreasonable, or the client exhibits what is deemed to be an “unprofessional conduct”, there remains no lasting obligation to continue working together, further requests will be declined and the client will be blacklisted; that is, all future projects with that client will be declined

  • Concerning the liability of DDPs: a high degree of care is taken to produce high quality, error-free DDPs but the client must double check the accuracy of the track order, track markers and CD data before sending the DDP to be manufactured. Especially where the artist makes changes to the track names, track order or has confusing files names, care should be taken to ensure no confusion of the track order or names has occurred at some stage. Neglecting to check a DDP before sending it to be manufactured and subsequently finding an error (wrong track order etc) on the finished CDs will not be deemed a failure of the engineer and no liability will be accepted. Liability will be accepted up to the total value of the mastering fee of the project if there is any error found demonstrably caused by the engineer which falls outside of the expected scope of checking by the client (audio glitches etc).

  • Infinite backups are not provided. It is assumed that after a month of project approval, the project can be deleted. However, an almost complete backup of all projects since around 2008 currently exists. Software changes over time. One example is the Catalina update breaking anything 32 bit. Other software updates may pose additional challenges for opening old sessions. More issues may occur as a result of the fallible nature of file archival on physical hard drives. This is why requests in respect to historic data retrieval are generally fruitful but no guarantee can be offered.

  • Ordering mastering constitutes an agreement to the conditions on this website in the English language. If you prefer to speak German and do not understand any detail on this page, you should request an explanation in German which shall be accommodated. If you speak another language and do not understand any aspect of these terms you should seek clarity before placing an order


  • All prices are quoted in Euros but invoices are also payable in GBP, USD and many crypto currencies. Due to high transaction fees on Bitcoin and ETH, Stellar Lumens is recommended for crypto payments
  • All other currencies should be paid by PayPal
  • Unless you specifically state otherwise, the electronic transmission of audio files constitutes the legally binding placing of an order

File formats

  • All files are to be sent using wetransfer
  • All audio files should have a 44.1kHz or higher sampling rate
  • 24bit files are preferred. 32bit and especially 64bit files are unnecessary however they will be accepted

Mix preparation

  • Bounce your tracks without a limiter on the master bus and turn the master fader down so that the highest peak in the song does not clip
  • If the waveform looks squared off, regardless of it’s size, you likely have a limiter or distortion plugin on the master bus, please remove this.
  • If your waveform looks very small you probably have bounced using an excessive amount of headroom and should re-bounce with the level turned up a bit more. You do not need a huge amount of headroom, just make sure it does not clip.

Mix critique

As a core part of the service, mixes which are not perfect will be given a mix critique and specific instructions to improve the mix. Bad mixes are always initially rejected unless specifically instructed to use the files as-is (for example if the original session can no longer be opened).

Please be cooperative of any mix suggestions or stem requests as it is likely a superior result will be possible with such changes.

A good mastering engineer is agnostic to the artistic value of the music. No compositional or aesthetic advice or feedback related to musical taste will ever be given which does not purely concern itself with the technical sound quality of the mastering process. Questions such as do you think my tracks are good?” or “do you think the A1 is the best track on the EP or should I switch the B1 with the A1?” are examples of questions which a mastering engineer does not have an opinion on. By contrast, a question such as do you think the kick drum sits in the mix OK or do you think working with a stem would get a better result?” is totally legitimate.

Attended sessions

Since 2015, no more attended sessions have been offered in order to keep turnaround times and prices low. The studio is not available for hire to external engineers. There is no capacity for internships or work experience.