Audio research LS25 any opinions

I too, am very happy with my VT-100 mk2 and LS-25 combo driving Watt/Puppies. Can anyone recommend best NOS tubes to try with LS-25? I am unable to afford the mk2 upgrade at the present time and would like to experiment with NOS. And also best place to purchase NOS tubes? I am running the supplied 6922's now. I Can also Highly recommend Marigo dot treatment and the Top Gun power cord for LS-25. Any suggestions on NOS tubes is much appreciated!

I agree with Blues_man's response, putting a bunch of solid state stuff in the amps and pre-amps isn't going to necessarily make them sound better, but surely different. Lets wait for some reviews and enjoy the sweet sound of the tubes we already have. ARC electronics are hands down the best sounding in the market.

I am also not in a hurry to upgrade both my LS25 and VT100 mkII. Remember, the changes may make the sound "better" technically, but less musical. To me, the bottom line is the enjoyment of the music. We will see.......

Has anyone tried the Powersnakes Viper v2 on the LS25?

As Gmorris noted, I am also in no hurry to upgrade to the latest ARC versions of the LS25 and VT100. The LS25MKI is a really nice preamp. Prior to the LS25, I owned a demo late-model Ref1. Sonically, both were very similar, with the Ref1 edging the LS25 out in soundstaging. Because they were so close sonically, I sold the Ref1, bought a used LS25, and pocketed the $difference. Regarding tubes, I have had really good success with Amperex 7308's, Siemens 7308's, Tungsram 6922's, and Mullard 6922's. Currently I am using a pair of Tungsrams and a pair of Siemens to good effect. This preamp really allows you to hear the improvements by using one 3mm Marigo white dot place at the base of each tube between the pins...much more air, blacker, more palpable mids. I know of no better cost-effectve tweak than the Marigo dots. I also found a nice improvement in performance by replacing a Synergistics Research Reference Master Coupler with a Harmonic Tech power cord.