FWIW a GAS Son of Ampzilla was just listed in the classifieds.
SST Ampzilla 2000 v2 vs Son of Ampzilla II
Looking for something new to drive my Dunlavy SC-IVas and am considering SST's Ampzilla offerings. My preamp is an ARC SP3. Hoping someone with a bit more exposure to them could share what they'd consider the pros and cons of each to be and whether the 2000 monoblocks are worth the extra money.