Wendy Melvoin used Rickenbacker 330s for the Purple Rain album, film and tour. Her 330s were modified with G&L pickups, a hardtail bridge and closed off F-holes. Originally natural, the guitars were refinished in purple. The 330s were stolen after the Purple Rain tour. Wendy also used the Sadowsky Madcat copies.
For my guitar, it was a Boss compressor, probably a CS-1, directly into a TC Electronic distortion pedal, into an MXR boost, into a Cry Baby Wah, then my chorus, the brand of which escapes me right now, and then into a volume pedal, all of which fed into a Mesa/Boogie Mark II head on a cab with, I think, a pair of JBL speakers. I was using one of my modified purple Rickenbackers when we recorded it.
Her amplifiers on the Purple Rain album and tour were Mesa/Boogie Mark IIs (or Mark I) with Bag End D-12M cabinets ("cab with... a pair of JBL speakers). On the Parade tour she either switched to Peavey Butchers or went directly into the sound board.