While your order is in progress we make nightly backups of all digital data files (as well as taking hand written notes on all settings used in our analog hardware processing chain) to insure that we can process your order without interruptions.  Once your order is completed (meaning that reference approvals are received, and all masters ordered are made and shipped) we generally try to keep at least one copy of these session files on a backup hard drive to allow us to access your previous order in case you want to make additional masters or revisions. 

We, however, make NO claims whatsoever to being an archival service and may not necessarilly have your files from previous sessions available to us at a later date after the order has been completed!   We also absolutlely will not be held liable for being still able to access any of these files once your order is completed. 

SO:  to insure that you have access to your mastering session files well into the future we recommend one of two things:

1) if you are attending the session bring a USB flash drive or a hard drive in an external enclosure with USB2.0, eSATA or Firewire 400 connectivity - and we'll gladly transfer all session files to your own storage media at no charge except for the amount of studio time it takes to make the transfer.
or:
2) order a Session File Backup Disc on DVD-R.  Each of these fits up to 4.7 gigabytes of date (usually more than enough to contain all files made for a typical album) and is charged at the rate of $40 per disc (shipping not included).

Session files can include:
.wav
24bit stereo wav files of the direct captures from our analog process chain (previous to any final digital processing), as well as any rendered digital processes that we have included
16bit stereo wav files - 1 for each track of your CD master
.cue
a small ascii text file known as a "Cue Sheet" that contains specs for the exact layout for your CD master that many CD burning softwares can use to burn Red Book spec CD Audio master discs from
.edl
SAWStudio "edit decision list" files containing the entire layout for the digital audio workstation software we use for final editing, assembly and processing.
.wpd
wave peak data file format generated by our SAWStudio workstation
.cd4
Magic Mouse Discus file format for the layout we use to print directly on the refernece and master discs
.rtf &/or .pdf
text documents generally containing the printed cue sheet and track listing for your masters
.dpf
Sonoris DDP Creator format files that we optionally use to create CD master layouts 
.mp3
lossy compressed file format commonly used for digital download files that we can make for you on request
.flac
lossless compressed file format that gives same audio quality as uncompressed wav

Total Sonic Media