Nice Tube Preamp for Boulder 1060

Magico V2 all pranawire cosmos(silver) cabling. The speakers are still breaking in but they are sounding a little harsh right now. I think my first move may be to try some copper cabling... ahh, tone controls.... Source is simaudio andromeda.

Yes, I am an impatient person and the "break in" of products drives me nuts. I probably have 150hrs on them and the lower range is becoming very nice. I realize that this is a very revealing/transparent setup and may never be my cup of tea, I don't know. I have pulled out all my "exotic" outlets that may(I think they do) or may not enhance resolution (how, I don't know but some combination of metals??) etc.. I am going to try out some copper cabling soon and if it doesn't work i'll just resell it. I have been through a lot of cables in the past couple years and thought I had exactly what I was looking for until I got the bug for a different speaker. The previous speakers' coloration and lack of transparency is readily apparent now...... I will give them another 100hrs or so before making any drastic changes. Although, my thoughts are that if it sounds bright now, it will never completely go away as this is the character (unforgiving) of the speakers and call it tone controls or not but not every product works for every component. The easiest way to take the edge off would be replacing the silver. Just my thought, I'm sure there are a million others.

Boulder 1060/1010
Simaudio Andromeda
No turntable.
No power conditioners- i've tried and can not justify their price/performance ratio.
I also have a dedicated line.

Thank you to all for the recommendations.

As an update.... everything seems to have calmed down a bit and I have been playing with positioning a lot. I'm probably at around 350hrs on the speakers. Bass extension is still improving. Jumped the gun a little bit on the component change.... that being said, I would still like to hear a tube pre in the system. And yes, the 1060 is a totally different experience than the 850 mono or 800 series in general. I think some may be impressed with the 850 low/mid punch but the 1060 is another level of refinement, speed and depth. The low end is equal or greater (deeper) than the 850 just much more controlled and layered. I owned the 865 and have heard the 2060, 860 and 850 at length.

For the sake of argument, lets just say the preamp is the VAC Sig. Mk2??