Used right after joining the Peppers in late 1988. The amp was a X-100B or X-60B head, connected to a pair of 4×12 Carvin cabinets. Based on the logo design, and speakers having black rings instead of white – the amp was made sometime in 1987.
This tweet, by [Zappas Gear](https://twitter.com/ZappasGear), includes a photo of Frank Zappa posing by an X-100B, and the caption reads, "#ZGPic #Zappa on Tour 1980s #Carvin advert - FZ poses with the Yellow Performance Stratocaster and an X-100B stack."
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