Pal Recording Studio (1957–1964) was an independent recording studio that operated in Cucamonga, California, an unincorporated community in San Bernardino County that later merged with the communities of Alta Loma, and Etiwanda to form Rancho Cucamonga.
Other recordings were kept in his vault and released on albums such as Lumpy Gravy (1968), Mystery Disc (1985), The Lost Episodes (1996), Cucamonga (1998) and Joe's Xmasage (2005).
Buff went on to invent the Kepex, an acronym for KEyable Program EXpander (the opposite of an audio compressor).
Paul Buff's Allison Research studio processors became common on pop recordings (Alan Parsons would use a Kepexed drum sound to create the 'heartbeat' heard on Pink Floyd's The Dark Side of the Moon.)
(which later appeared in 1967 as the A-side of a Mothers Of Invention single) and the previously unreleased Zappa novelty song, "Masked Grandma".