Ah, crap Snoop. I somehow didn't provide the link to the tubes I was interested in. That might have helped. Here they are...
From Galen Carol...
EAT Cool Valve ECC803S (12AX7) Ultra Premium Vacuum Tube
The Cool Valve ECC 803S is the finest twin triode with separate cathodes available in today’s market.
The most demanding tube for both sound and build quality is Telefunken ECC 803S. These can now only be be sourced from old inventories and often from unreliable sources offering no warranty period. There is also the significant risk of forgeries, poor performance or overpriced goods.
Using this tube as a benchmark, EAT set out to design a tube with even better performance. With their extensive expertise, great care in manufacture and rigorous testing and grading, they appear to have achieved their goal in the Cool Valve ECC 803S.
The selection procedure uses several measurements. All measurements are performed after a long burn-in procedure and thermal stabilization of its parameters. Only a few valves pass the selection process and even fewer pass the strict Diamond selection.
The inseparable part of the Cool Valve ECC 803S is the EAT Cool Damper. EAT developed a special high temperature glue to affix the damper to the valve glass envelope. This glue is designed to transform vibration energy into thermal energy, which is then dissipated as heat. The Cool Damper is a truly effective anti-vibration and anti-microphonic device.
From Music Direct...
These Tubes Will Beat Any NOS Tubes! The Best We've Heard!
The new European-built 12AX7 (ECC-803S) triode tube from EAT is absolutely unbelievable. We have tried them in everything from phono preamps to line stages and amplifi ers. The results have absolutely knocked us out! Built to the tightest tolerances, these tubes are super low noise – dead quiet actually! All tubes are burned-in, then tested to ensure perfect matching and thermal stabilization. The Cool Valve tubes include the EAT Tube Dampers for dissipating vibration, as well. Rated for a lifespan of 10,000 hours, these tubes have beat the pants off our NOS (New Old Stock) input tubes. Expensive but worth every penny… guaranteed!
I have no idea what these will sound like. I already told you that I have a full compliment of the Ei 12AX7 gold pin tubes and they sound fantastic on my current rig but they will all have to be replaced in the next couple of years, as they have many hours on them. While the end result is of utmost importance, the availability of the tubes is another. As time marches on, tubes become increasingly rare and the price reflects this. I hate paying extra for things just because something is rare....and one day, those too will have to be replaced. These may be quite a bit more than what I paid for the Ei's but since they are based off of the Telefunken ECC 803S, I'm looking at it like I'm paying less for a rare Telefunken tube that will still be available years from now. If I don't like the sound when I get them, I always have the 30 day return policy to fall back on but I'm hoping that will not be the case.
Here's what I would be paying if I were to actually get the Telefunken 803S
At those prices, it would cost me $2,600.00 just to get a set for the Jolida. $7,800.00 for a full compliment in my rig. Screw that! As far as finding a set of new tubes that sound better than NOS tubes? I have auditioned some new tubes here and there and some of the new tubes do sound better than NOS tubes. A perfect example would be the tubes DaveS has on the Silver Seven's. I forget what brand they are but they definitely have left a favorable impression on every amplifier I have heard them in. I guess what it is I'm trying to say is that I'm stubborn, I have already made up my mind and I'm kinda forcing myself to walk the walk. Now whether or not that's a good thing remains to be seen.