@ervikingo Hope your hum is still a non-issue.
I'm anxiously awaiting the delivery of my first tube monoblock amps.
I had a hum issue with my solid state amps, even with all new electric dedicated 20amp lines and audio grade outlets. Thank god a single humX fixed the issue, but I'm kinda nervous about my new amps since I won't be using dedicated and newly run outlets.
I'm probably gonna have new 20amp lines run with audio grade outlets placed once I know where I'm gonna have my amps set up more permanently, but just kinda nervous.
Well see... I'm also probably gonna ask the dealer I bought my amps through to lone me a puritan 156 with ultimate cable to A/B things should there be an issue.