2. amps-preamps
  3. 1341221351

Replacing 6550s with KT 88s

I am currently using Winged C 6550s in my Conrad Johnson LP 70S power amp and am very happy with the performance etc. Some tube sites recommend an upgrade to Genalex Gold Lion KT 88s in place of 6550s. Would love to hear from CJ or ARC owners or others who have experience of this.
Many thanks
Pradeep
128x128sunnyboy1956

Showing 2 responses by bifwynne

bifwynne
2,206 posts
 
Arthur, Kevin Deal at Upscale just sourced a whole bunch of SED 6550 C tubes. Just bought one for my ARC Ref 5 linestage. Seems to work just fine. Price is still reasonable.
bifwynne
2,206 posts
 
Sunnyboy, my amp is an ARC VS-115 which originally came stock with 6550C tubes. Since then ARC switched out to the KT-120s, which is what I used now. Bought the KT-120s from Upscale Audio. In my opinion, the KT-120s better the 6550C tubes in pretty much every way. If your amp can handle the extra current demands, consider the KT-120s. But check with the factory first!
More to discover