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Paul S wrote:

You have said that there are no "good" 6N6Ps; but are some physically constructed better than others?

Nope it was not what I said. I said the all 6N6P are equal, at least among those that I have seen and there are no reasons to pursue different production versions. (Some Russian tube from 60 generally better then form 70-80) There is a deviation on tube tester there between the new different tubes but it is hardly auditable.

Paul, also, I my suggest that you a little bit too “violently” took the ML2 and your recent obsession with re-tubing of this amp is not good thing, at least it’s how I see it. You got a new amps and it looks like you like it. It is fine but what makes you to be fascinated to change tubes in it? Are any specific problems with sound while you use your current tubes that from you point of view makes the ML2 to sound bad? I do not think it is how you feel. So, if you have normally operating ML2 then spend a month of two juts living with it and getting accustom to it sound and then VERY SLOWLY buy some spare of the tubes. This approach will save you a lot of money, lot of nervousness and will prevent you from immature decisions.

jessie.dazzle wrote:

I have an L2 that uses this tube (at an alarming rate!), so I try to keep a stock of them..

Yep, as the person who was the very first who alarmed public about the L2’s 6C19P-sysndrome I very much concur with what you said. Lamm keep shameful silent about the issues, in fact I did not even know if he knew about it 5 years back and eventually the numerous companies made him to make an announcement that the tube should be changed once a year. Yep, right – one a year my tail!!!  I remember at the best times I was clearly able to distinct the 6C19P that worked for a week (!!!) in Lamm L2 preamp. I really do not know if it is the problem with 6C19P of with the way how Vladimir uses it. Theoretically it should be very simple – juts a common regulator but I did not look further into L2. In my headphone amp the 6C19P sits at near 170V, 20ma with -33V at bias… It works fine with huge microphones (1 out of 10 is suitable) and it looks like it still work there “faster” then It would be expected. Still, I do not use that headphone amp too much to make more definitive conclusion…

jessie.dazzle wrote:

Regarding power cables : In my case, grounding made a difference. Since you are making your own cables, you may want to consider "lifting the ground" and taking advantage of the chassis grounding lug Lamm provides, connecting your ML2s (and ideally the rest of your equipment) directly to a dedicated ground (using one of those long copper-coated grounding rods just outside the house).

Jessie, it has nothing to do with Lamms. The use of grounding that come from the “wall” should be absolutely prohibited for means of high end audio. The entire audio installation MUST be listed form the wall’s ground. It is very basic and very essential requirement.

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