SST Ampzilla 2000 v2 vs Son of Ampzilla II

I ended up getting the Son of Ampzilla II from Underwood, but there is a faint buzzing. It is on both channels regardless of what preamp or input source. :-(

Reach out to EJ at W4S/SST and see if he has any suggestions.  I would try a cheater plug on the amp and preamp and see if that does anything.  

Hi! I've been using my SOA2 (220 VAC version) for almost a year without issues.

Dead silent from both unbalanced and balanced inputs. 

I use as source a Lindemann Musicbook 10 DAC/Pre, and speakers are Dynaudio Confidence C1 Platinum. 

Sebastian 

Noticed I never followed up. The buzzing ended up being from a Roku I had plugged into the same electrical circuit. Seems to be a common issue with Rokus. They really need to be grounded and just aren't. Just found an Ambrosia 2000 PreAmp to go along with the SoA2. Excited to finally upgrade from the SP3

I have just ordered a SoA2 and Ambrosia 2000 preamp.  How do you like your setup.  Any regrets.  How do they sound?  Are you running a sub?