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ARC Ref 3: Tung-Sol 6550 in power supply?

I have sourced a new production Tungsol 6550 from The Tube Store in Hamilton (Ontario); I intend to use it in the power supply of my ARC Ref 3. Has anyone had any experience with the Tung-Sol TS6550 in the Ref 3? Have you compared it with the original Winged "C" SED 6550C shipped by ARC with this
line stage? Preferences? Reasons?

See:
http://thetubestore.com/tungsol6550.html
guidocorona
soundoc
12 posts
 
I have to replace all 250 hours the 6L6GC in my powersupply. The sound becomes liveless. What's wrong?
guidocorona OP
4,114 posts
 
Probably the 6L6GC aged prematurely. It is worth pointing out that any deviation from the ARC supplied SED Winged 6650C may potentially be an "interesting experiments" yielding unpredictable results. . . and any problems it yields may void the factory warranty. G.
broederen
22 posts
 
Dear all,

After one day (no power on) the unit is now functioning normal again with the original swetlana 6550C. Anyone any thoughts?

Cheers,

Broederen
microstrip
180 posts
 
Just to add that my ARC Ref3 time counter shows 3674 hours and today I tested the original 6550 tube : transconductance was 5200 micromhos - this means the tube is still perfect!
oneobgyn
410 posts
 
ARC says you easily get 5000 + hours before retubing is necessary
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