American record plating and pressing plant established in 1974. From 1995 to 2010 RTI operated the joint venture disc cutting studio AcousTech Mastering at the same location.
It is sometimes listed as "RTI Record Technology Inc." on older test pressings and just "RTI" or "Record Technology Inc" in the regular print of some releases.
Matrix number scheme used for the processing:
Side A: xxxxx (2) or (3)
Side B: xxxxx (2) or (3)
Later adjusted to include the side identifiers:
Side A: xxxxx.1 (1) or (2) or (3)
Side B: xxxxx.2 (1) or (2) or (3)
Only the sequential numbers should be added for the role Mastered At. See Directions In Music for an example.
Note: a new sequential number counting started in September 1995.
(1), (2) and (3) indicate the matrix process used:
The 3-step process means that the master lacquer disc is used to make negative fathers, positive mothers, and finally stampers.
The 2-step means that the master lacquer disc is used to make a negative father, a mother and then convert the father into a stamper. This is used for small runs and in the case that extra stampers a required, the mother is used to produce those stampers.
The newer 1-step process (often found on MOFI UltraDisc One-Step records) means that the master lacquer disc is used to make a negative convert which is used to produce directly the vinyl (w/o using father, mother and stamper). The removal of two steps in plating process improves the sound quality.
As already mentioned above the side identifiers .1 and .2 are not always included in the matrix scheme.
Other stamper identifiers are one or two dotted crosses ( ꔰ [unicode symbol], + or ++), indicating a pressing by RTI.
A record processed by RTI doesn't necessarily mean the company also pressed it. Please only use the Mastered At role in LCCN field when the scheme appears.
Please use Pressed By only when it's credited on release and/or the information is taken from a reliable source.