The Ambosia Pre, the Ampzilla 2000 mono blocks and the Son of Ampzilla 2000 are all JB.
The Thoebe II pre and the Son of Ampzilla II amp are both designs that are largely Jim's, but have been tweaked and finished by W4S.
The Thoebe II pre and the Son of Ampzilla II amp are both designs that are largely Jim's, but have been tweaked and finished by W4S.