Yesterday I had at home for demo a Opera Consonance, KT88 single ended or parallel feed, about $1,000, not the ultimate in tube sound but better than most recievers. Today at home for demo (from Deets Sound Room), I have Audion Sterling EL34 single ended output "integrated amp" (passive input volume control), about $2,000. This thing is better than most solid state amps in pace/musicality, about 9watts/channel?, plenty of power for my 93db sensitive speakers. For a "fuller" more romantic "tube" sound I would suggest 300b single ended output, most prices in neighborhood of $4,000.....lots of stuff out there under $2000, good luck, Mike.