Audio Research Ref5 KT88


Is there anyone replaced the 6550 in the Ref5 or Ref3 or Ref cd8 for a KT88. I have a few nos GEC kt 88 from the fifties and the sixties. I replaced one in my Ref cd8 a few months ago and in my opinion it has more detail, finer, opener and smoother.
128x128rojo1955

Showing 1 response by kclone

I have the REF 5, but have not even thought about changing to the KT88. I did change my Cayin KT88 to the Tungsol 6550. I liked the 6550 better in that amp.