Mario Mutis

Mario Mutis and Eduardo Alquinta used to switch between guitar and bass in songs such as "Amor Americano" and "Corre que te Pillo".

Use with MusicMan cabinets

That TV special shows Mario's basses, amps and cabs.

Use with MusicMan amp head

Use in rack with MusicMan bass head and a Sansamp RBI preamp

The bass is clearly seen at 3:56, although is present throughout the video as it's a live performance. Mario used this bass since mid 70's until 2013.

Seen throughout the video, especially in takes like the one at 4:00, Mario uses this bass since 2013. It was given to him as a present.