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Lamm LL2 tweaks?

After a very long search I decided to upgrade my Rotel preamp to an LL2 Deluxe. This should be a HUGE improvement and I can't wait for the Lamm to get home!!!

As I wait I'm already wondering which tweaks others have found most effective with this unit and would like your input.
- Tube rolling: I've seen several posts stating it does indeed react to this. What should the pecking order be? 12AU7, 6922, 6X4? Which tubes have worked best for you?
- Vibration control?
- Power cord: I've seen a post stating the LL2 is inmune to PC upgrades. Do others agree?
- Tube dampers?
- Which interconnects have worked best for you?
- Other thoughts?

FWIW it will be paired with a McIntosh MC275 with rolled tubes. ICs are cheaper Nordost, and my next weakest link is my CD player, and I will likely add an outboard DAC.

Thank you!
lewinskih01
lewinskih01 OP
793 posts
 
Tvad,

Please don't take my reply as a challenge. It certainly is not! I appreciate your input. I have been digging the archives for info so I had some background prior to posting.

I went back and searched, and searched, and I could find nothing! I was going nuts! I was about to quit digging when I remembered I had also searched the asylum, and there it was: June 22, 2006. http://db.audioasylum.com/cgi/m.mpl?forum=amp&n=97660&highlight=tvad+ll2+immune&r=

But then again, I did not mean to challenge you. Changing points of views based on further experience is good, in my book.

Regards,
Horacio
tvad
9,467 posts
 
By golly, Lewinskih01, you're right! Clearly, I was drunk when I wrote that.

Just kidding.

The Purist Audio Dominus *did* make an observable and positive difference on my LL2 Deluxe by tightening and controlling the bass.
lewinskih01 OP
793 posts
 
Hey, Tvad, I have used that "well...I was drunk at the time" line, but in different settings...mostly related to ladies and stuff. Oh well!!

I take you were feeding power direct from a dedicated line thru the Ferrox, right? (ie, no power conditioning)
Did you also used Purist Audio ICs? Did you noticed much sensitivity to the type of IC used?

Thanks!
tvad
9,467 posts
 
Lewwinski01, I was using a Shunyata Hydra 2, fed by a Purist Audio Dominus 20A power cord.

I was using Purist Audio Venustas ICs.

Please don't ask me what I compared all these to. The answer is probably somewhere in the threads.

You've worn me out.
cipherjuris
145 posts
 
Again, while I don't have the Lamm preamp, I have the M.12 hybrid amps. Each of them has its own dedicated main, a Purist Anniversary connects the main to a Transparent PowerIsolator MM and a Purist Anniversary connects the PowerIsolator to the M1.2. I have tried connecting them directly to the dedicated main, but the sound became muddy by comparison. I started with the top-of-the-line Transparent PCs, moved on to Virtual Dynamics Revelations, then to Stealth Dream, then to Purist Anniversary. The Anniversaries were much better than the other PCs.

All of the NOS tubes I've had are better than the stock Russian tubes. The best of the NOS tubes were the pinched waist Amperex and the CCA.

I also rolled ICs, and found the Purist Anniversaries by far the best, even much better than the Dominus. The last Anniversaries I installed were the SCs and they made an order of magnitude difference, but I can't say how much of that is solely due to the SCs and how much is due to the synergy of an all Anniversary system.
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