Is rectifier tube arcing a problem?

Sorry dekay, I will refrain from participating in a tread you are part of and would appreciate you do the same for me.

@gte357s - besides the arcing problem, are you enjoying your ANK monoblocks? Are these driving your Spatial X5s? Are yours the parallel SET amps? What 300Bs are you using?

I'm also using mine to drive OB speakers - GR Research NX-Oticas - which also have powered woofers. Mine aren't as efficient as the X5s though, at 92.5db. But I'm going to replace the NX-Oticas with GR Line Force speakers (hopefully) in the next few months - just waiting for the cabinets to be completed and I can start assembling them. The Line Forces are 99db/w efficient so the 300B amps should have plenty of power.

btw - it's only the interstage and output transformers that are C-core. The mains transformer and choke are more conventional (EI-core I believe).

I'm surprised Audio Note would market these amps with what seems to be a design flaw. Are others experiencing same issue, and if not, I'd think it could be improper assembly.

@sns 

it is a Audio Note Kit, not the Audio Note UK.  However, there is a bit of a history.  What I learn is that the circuit of this monoblocks is initially designed by Andy Grove who is a prime engineer at Audio Note UK.  

fiesta:

Not going to happen on my end, so your decision is all on you from here on.

You remind me of a recently new "member" who posted that my abbreviation of Audiogon as A’Gon was "pretentious".

DeKay