Linlai E 6sn7 tubes

Mine came in the same display box with sculptured foam.  I thought that was pretty solid packaging.   @bugredmachine, is it possible your tubes somehow made it past QC?  My tubes are dead quiet with the volume up way past the volume I would ever listen.  The Dude. That is a pre I lusted after.  My interest with Aric’s Motherlode II came about after reading that the original Motherlode was an attempt to duplicate the Dude topology.  Changes were made,thus the Motherlode II.  I would love to do an A/B comparison between the two preamps.   Now back to our regularly scheduled program.  Also,please give an update if you swap out your cables. 

I cleaned all the tube pins with Deoxit and no change in hiss.

Then I changed out the Stealth's for Gabriel Gold's and no change.

After that I put my Shunguangs back in with the Indra's and all was quiet and enjoyable again.

Tomorrow I'll send them to Dan to see if they continue to hiss.

Morning Pete, how many hours are on those tubes?

@bugredmachine a buddy of mine has a preamp that reacts in an odd way to gain of different tubes, so it will be interesting for @danmar123 to test for you. Dan, what preamp do you have, same or different than what bugred has?

Non upgraded Don Sachs 2.