2k budget for Amp

No.It depends on sound you like.What have you heard that you like?I can tell you from same manufacturer (I sold Krell back in day) all things being equal Class sounds better but gives off way more heat.Hard to find Class A new at that price.If you could see if you can get trial on a Class D amp like PS or Bel canto.But Wyred from Underwoodwally offers big current for bucks.Nice old standby for me is Bryston 4 B ST with warranty left on it (A/B).You have some options on a hybrid integrated like Pathos for $1500 or a Unison.or go tubes with decent integrated (I won EAR 834 but think friends Cary SLI80 is one to beat).But you didn't mention pre so......

Agree Hanamike/Jaymark.With tubes as front end in Integrated you get both that's why Unison Unico and Pathos Classic Mk II are great amps.Get bass control and "bloom" and warmth from tubes.I go all tubes but I use horn speakers and do mainly jazz.But a ss power amp and tubes on top would be a good choice just not sure again what pre your using.
Chazz