Recc.for warm,smooth sounding tube amps


I have older vintage ARC tubed monoblocks which sound lean and strident to my ears. Would appreciate reccomendations for tubed monos with a warmer, more liquid sound.
jma52d8
The VAC gear is fantastic. Either in mono's or their stereo units. Listen to their 30/30 amp, one of the best.
Do try different tubes if you have the opportunity. The Balanced Audio Technology VK-60 is sensational in design and the resulting sound is as good as it gets.