John Paul Jones

In a YouTube video titled "Led Zeppelin - Live Aid 1985 - Full Show - 4K AI Enhanced," John Paul Jones can be clearly seen playing an Ibanez RB650 Roadstar II Bass in white at the 3:21 mark during the Live Aid performance. The video is provided by Pure Frosting HD Archives.

In a photo from the 2007 reunion show at O2 Arena, John Paul Jones is seen using a Fender Fretless Precision Bass, likely for the performance of "In My Time of Dying," which was originally recorded with a fretless bass guitar. Jones can also be seen using this model of bass in a recorded concert performance of "In My Time of Dying" at Earl's Court in 1975, recognizable from the lack of frets and the two metal, knurled knobs.

Jones also notably utilised effects units for his keyboard playing in Led Zeppelin, particularly favouring a Maestro Phase Shifter to emulate various rotary speaker sounds, which can be sitting atop of his keyboard rig in various images from 1973-1979.

John Paul Jones uses the Yamaha DX7-IIFD, as evidenced by a YouTube video from Soundgas, which details an auction of his studio gear, including this specific synthesizer.

While more commonly associated with Acoustic amps, here is a promo shoot of him with Marshalls and there are concert videos from the LZII tour where he played in front of a Marshall.

John Paul Jones is confirmed to use the Roland JX-8P, as evidenced by an Instagram post from soundgasltd, which announces an auction of gear from his studio, including this synthesizer.

John Paul Jones uses the Lexicon 480L effects processor, as confirmed by a video from Soundgas on YouTube. The video features this equipment and notes its origin from Jones's studio, underscoring its use by the artist.

According to this website, John Paul Jones used his own Hammond M-100 Organ in the tracks "You Shook Me" and "Your Time Is Gonna Come" from the debut album from 1969.

In this photo from https://www.talkbass.com/threads/my-favorite-john-paul-jones-bass.1494463/#post-24765857, they talk about John’s ‘51 P Bass. You can see him use it on popular songs like Immigrant Song