I own a pair and they are much less restrictive in speaker matching than most SETs, probably due to their pretty robust power output. I've even successfully used them with the Verity Parsifal/Encore, a modestly difficult load that will devour many SETs alive. So, don't be shy in experimenting - there's a LOT of good choices out there.
Marty
PS, they do sound different with 211s vs 845s, notwithstanding the identical specs of those tubes - so be sure to experiment.
Marty
PS, they do sound different with 211s vs 845s, notwithstanding the identical specs of those tubes - so be sure to experiment.