Synergistic Research Powercell 12UEF

I've just taken delivery of a pair of these latest models from SR and as one of the early customers and given the interest in SR graphene technology I thought I would share some first impressions. The 12UEFs (the glass top model) replace a pair of 10UEFs in my system. One powers the sources (phono, preamp, turntable and my 4 part DCS stack) while the other powers my two monoblocks. I had been very pleased with the 10UEFs and have several years experience with them finding that they did a good job of getting out of the way and letting each component perform.

Anyway after a day or so of listening (so given past SR black experience expect more burn in) I am surprised to relate that the impact of the 12UEFs is almost transformative. The best way of describing the effect is to say that with the 12s its as if a) all the musicians are now performing together in the same room and b) you are in the room with them. Across an array of my test discs I found the same effect. The normal indicators of frequency extreme performance, dynamics etc all somehow seem irrelevant. A couple of examples. On "Bye Bye Blackbird" by Nancy Harms yes the bass is very clear but also superbly dimensioned, this then becomes a busy and congested recording as the full band enters but with the 12UEFs it's easy to sort the parts out and hear all of the musicians playing off one another. Another simple recording is Canen "I've got a guy in Kalamazoo" -- this is almost a mono recording and frankly I thought it sounded a bit muffled but with the 12UEFs again everyone is playing together, you can't help your toes from tapping and really engage with the bass players moves

One odd manifestation of the effect of these components is with any strong central vocal when you move your head forward and back it seems as if you are in the room with the vocalist and are moving away and towards him or her -- all the other instruments stay relatively in proportion and it's as if you can walk around the room

I can only surmise that by taking away low level noise from the power supply the 12UEFs are letting through more of the recorded acoustic - others have noted similar effects with other SR Atmosphere and black series components

Anyway for those already using SR Powercells or in the market for some sort of conditioner I can highly recommend them
^^^ Very nice review, folkfreak ...

Here's a pic of the 12UEF:

Sounds like you're getting similar improvements from the 12UEF that I got with the SR Level 3 power cords.  

How anyone can deny what this technology does is beyond me. 

The 12UEF = Another SR product added to the bucket list. :-)

Congrats on the new 12s! Mine is still in shipment...

Not to take anything away from your review, but did you try the Atmosphere PowerCell AC cord with the 10UEFs? Also, did you use the PowerCell FEQs?

I ask the first question, as later versions of the 10UEF came with this cord. Plus, if you use the Atmosphere PowerCell AC cord with the 10UEFs, you will be comparing just the power conditioners.

On another subject, it looks like you're using the Marigo Mystery Feet. Have you tried comparing them to the Grand Prix Audio Apex footers for components?
My PowerCell had the FEQs but the original (CTS?) power cords, I had considered upgrading to the Galileo LE power cords but the new 12s came out before then -- anyway as the trade/upgrade on the new PowerCells is about the same as an Atmosphere L3 I think I'm OK

I have got one Atmosphere L3 which I use to power my Transporter, most of my other power cords are Galileo LE

I do use the GPA Apex footers, the Mystery feet are additional -- the apex are under the stands, the Marigo's go under each component
I didn't realize you traded in the 10s. That makes full sense, then.

I understand you're using the Mystery Feet under your components. I was just wondering if you have tried comparing them to the Apex footers - under components - as the Apex footers probably absorb more vibration.
I just received my UEF 12 yesterday. I purchased a used AudioQuest Niagara 7000 which was so much better than my 10UEF with the UEF FEQ. So I am anxious to compare the UEF 12 to the AQ Niagara 7000. I also took advantage of the promotion which provided a free Atmosphere power cord and I chose the level3 digital. I put it on my Music server and am letting it burn in for a few days before I hook up the UEF 12. I had to remove the gold bullet from the level 3 PC as it had to much bloom in my system and caused the pinpoint imaging to change. I love SR products and will report my findings on the comparison of the 12 to the Niagara.

The AQ 7000 is very well regarded (and a hair pricier than the UEFs I believe) -- were I not locked in to SR products I'd like to check it out -- I should also note that all my power comes pre-treated by a Torus in wall transformer so I tend towards simpler, less transformer based end conditioning which is why I think I've liked the SR kit

I chose not to bother with the level 3 option, instead got a very good deal on the trade ins :-)

Anyway look forward to hearing about the comparison
It is very well regarded and sounds fantastic. The prices dealers were offering to upgrade to the new unit made this a no brainier. I will provide an update in a few weeks