Diskwerks

Mastering studio - operated by [a=Gary Hedden] and W. Gavin McGammon in Schaumburg, Illinois, a northwest Chicago suburb, adjacent to [l=Hedden West Studios].
In 1977, the studio was equiped with a SP-77 transfer console and the Ochoa system which included an A-80 preview machine, SP-75 program console, Neumann VMS-70 computer controlled disk cutting lathe, with SX-74 stereo cutter head driven by 1,200 watts of audio power. manufactured by Neumann of West Berlin and installed by Gotham Audio Corp., exclusive U.S. distributor.
In 1979 added the mix-to-disk mastering capacity, sparing the generation of mix-down tape and a compromise between direct-to-disk and conventional mastering.

Most LPs mastered here were stamped with DISKWERKS in runout (example: [r4835003]), though some early masters had an etched stylized 'DW' [may appears a capital D with overline and underline - example: [r1765617]].
These should be credited as "Lacquer Cut At".

Mastering engineer name or initials may also sometime appears etched in runout.
These should be credited as "Lacquer Cut By".
Known engineers:
[a=Iain Burgess] ANV Iain
[a=Ron Lewter] ANV Ron or RL
[a=Kevin Vogts] ANV K.V.