Custom record mastering and pressing facility in Hollywood, California (USA), founded in 1957 by . For the associated label see .

The company was specialized in short-run high quality pressings, mostly for local colleges and small firms. In 1967 a professional audio equipment sales division was formed that catered to studios across the country. In 1970 a special products group was formed to package oldies for radio stations. (This was intended to provide more business during the non-school months.)

Identifying marks are an etched CF or a stamped logo (see pictures) in the runouts. Pressing ring size is 73mm (1962-1975).

In the early 1970s a new mastering process was introduced, using a Neumann VMS-70 computerized lathe with Neumann SX-68 cutterhead and amplifier for tape-to-disc transfer. By mid-1975, they were in trouble with their creditors and began making plans to file for bankruptcy. On July 8, 1975, all of their assets were auctioned off which included: 1974 Neumann VMS 70 lathe, console, Disc Masters Control Rack, 2 Ampex Tape Decks, Small mixing console, 2 Harris LT 1647 29" x 26" presses, 60" inch Chandler Knife, ATF Chief 15, Nuarc 22" enlarging camera, Nuarc 42" Flip Top, Paper Drill, Power Corner unit, Punch press, Crochett Album Gluer & Sealer, IBM Selectric Composer and some office equipment.

Engineers known to have worked here (and their signatures):
- (WCW): mixing, mastering;
- Jack Williams (2): recording;
- Mike Levey (3) (M.L.): mastering, mentioned as chief in 1972;
- (SH): re-mixing;
- Terry More (THM or TM): mastering, re-mixing;
- : recording, mentioned as chief in 1968.

Custom Fidelity had associations with studios and independent engineers throughout the United States. Sometimes the runouts also feature codes indicating the provenance of the recording. Some of these associates (and their codes) include:
- Alex Hassilev Studio/West Knoll Recording Studio (WK);
- Custom Fidelity Associates, Cincinnati, Oh;
- Dwight Crumb (DC).