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Item: SED Winged “C” 6550C tubes (x7 tubes)
Item Condition: less than 50 hours use max
Reason for selling: No longer have any tube amps
Payment Method: Pickup - Cash, Paypal, Bank Transfer
1 matched quad, 1 matched pair and a single - total 7 tubes
Link to more info https://www.thetubestore.com/winged-c-sed-6550c (US$109 a tube)
The 6550C in my ARC Ref 5SE has gone unstable and needs replacing. I understand the new KT 120 tube is better than the 6550 and can be used to replace the 6550. I know the KT 120 is being used in ARCs new power amps. Has anyone done this swap for the Ref 5SE pre-amp? Also, anyone know a good tube supplier in Melbourne?
I'm waiting for ARC to get back to me with my query on the KT 120.
Reply from ARC: The circuit is designed for use with a 6550. Please continue using a 6550.
I'll continue with 6550.