Rudy Sarzo

In this video, Sarzo can be seen playing an Aria Pro II SB-1000 Bass.

In this Advertisement, Sarzo can be seen holding his Signature Bass.

The text in the advertisement reads:

Rudy designed the Sarzo Bass to meet his playing and preformance needs. These exact specifications are duplicated in every Sarzo Bass... available at your nearest, authorized Peavey dealer.

This Bass appears to have a 3-Piece Multi-Ply Neck, a 24-Fret Fretboard with Cat's Eye Inlays and Dual Humbucking Pickups.

In this user-uploaded photo from 1985, Rudy Sarzo is seen with his signature Washburn B-70RS electric bass.

In a user-uploaded photo from Ampeg, Rudy Sarzo is seen with his Spector Euro 4LX Poplar Burl bass guitar, indicating his regular use of this instrument.

In the 1981 live video of Ozzy Osbourne's "I Don't Know," Rudy Sarzo can be seen with a Fender Jazz Bass at the 3:54 mark, likely serving as his backup instrument.

Seen in this video at a Quiet Riot show in 2021.

Rudy Sarzo is seen with a Spector Coda 5-String Bass, which features a design inspired by the Fender Jazz style. This is highlighted in a photo session shared on his Instagram, crediting iconic rock photographer Glen Laferman.

In an Instagram post, Rudy Sarzo is featured with an EBMM Sting Ray bass, promoting his live online masterclass focusing on the bass styles of Megadeth and Iron Maiden.

During the 1982 Diary of a Madman tour, Rudy Sarzo can be seen playing a 1979 Fender Fretless Precision Bass. This instrument was primarily used in performances of songs from the Diary of a Madman album, such as "Believer" and "Over the Mountain." This is evidenced by the video "Ozzy Osbourne - Over the Mountain (Live - Albuquerque, NM Jan 7, 1982)" available on YouTube, provided by OzzyOsbourneVEVO.