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.
Her amplifiers on the Purple Rain album and tour were Mesa/Boogie Mark IIs with Bag End D-12M cabinets. On the Parade tour she either switched to Peavey Butchers or went directly into the sound board.
Her pedals on the Purple Rain album include a Boss CS-1 Compression Sustainer, TC Electronic distortion (probably a TC Electronic Booster+), MXR boost (probably an MXR Micro Amp), Dunlop Cry Baby Wah, Unknown Chorus Pedal and an Unknown Volume Pedal.