Cary SLI-80 Signature: 6922-6SN7-5U4 tube shootout

Ghirteen: What are the stock tubes?

lol,
yeah I guess that wiuld be a good place to start!

The 5U4 is a 5U4G Chinese made

THe 6922 are Sovtek

and the 6SN7 are Sovtek 6SN7GT

Actually, the 5U4 rectifiers are Sovtek as are the 6922s. The 6sn7s are chinese. At least that's what was in mine. The 6sn7 were replaced by 1950's Raytheon's and the 6922's were swaped for some NOS Ediswain. These changes were suggested by Kevin Deal of Upscale Audio and they are a good return on the investment (approx. $200). You should give them a call.

Whoops!

Ok here goes again,

The 6922 tubes ARE Sovtek (thanks Intune)
The 5u4g tubes are Sovtek as well
The 6sn7 tubes are Chinese

I am currently using Electro Harmonix 6550EH power tubes, and Svetlana 6550 as well. Initial edge goes to the EH, these things sound nice!

ANyway, which of these (6922-6sn7-5u4) should be changed first?

I am hoping to be somewhat scientific about this, and therefore only want to change 1 thing at a time, which is also easier on the budget.
Intune: what differences did you get by going to the tubes suggested by Kevin? (BTW Kevin is awesome)

thanks!!!!

The 6922/6sn7 swap resulted in better high freq. sound along with a bit better detail. I guess most of the audiophile jargon would apply - air, sound stage, image all improved. YMMV. Over the next few weeks I will be checking out some Tungsram and Siemens 6922s along with some Ken Rad VT231 (6sn7 equiv). I suggest a visit to the audio asylum tube section if you haven't visited already. The asylum posters are very helpful.