Pass Labs AMP’s- What is the best Pass Amp Sound for You from past 10 years

I've owned Aleph 3, Aleph 30, XA30.5, and for the past 5 years First Watt SIT-2, along with lots of tube and SS amps from other companies.  SIT-2 was a revelation, marrying many of the best qualities of SS and tube amps. 

I recently decided to try the SIT-3 and it just takes the beautiful voice of the SIT-2 to the next level.  More vivid, more detailed, more present with better bass control.  SIT-2 sounds more laid back by comparison.

I was so impressed with the SIT-3 I bought an XA25 a week later for another system and damned if I don't love it too.  It has a slightly drier and more neutral sound than the SIT-3 and more linear top to bottom.  Better bass control still and a little fuller/denser tone to instruments, better speed.  SIT-3 is juicier, sweeter, with wider soundstage and better sense of air and space around and between instruments.  Sometimes voices and certain instruments can sound hauntingly beautiful.

Both are just so good and having the fortune of owning both, being able to interchange them, is a joy.  I'm also happy to report that they both drive my Magnepan 1.6QR very nicely, though mine have the completely different from stock Magnestand crossovers so I don't know what the real impedance curve looks like.

The one I loved was the 250w Threshold S/500 STASIS OPTICAL BIAS II, biased up to approx 20w Class-A, nice and toasty, delicate but a brute when called for, 36 x bipolar output transistor, heaps of current.

Cheers George

I'm thinking of a FW J2 to go along with my PS Audio BHK Pre. I'm leaning J2 over the Pass XA 25 due to having balanced inputs. I'm running ZU Omen DEFs, so power will not be an issue. 

Averyclark: 
I would like to try the J2 as well and funny but I was thinking of the BHK Pre as well. With the ZU Omen DEF’s as an option for me as well. What kind of music are you listening with that setup?

After communicating with Nelson Pass and Sean Casey, I decided to buy the XA25, because it was more versatile. I was very close to buying the J2. I have a pair of Omen's with the 08 Druid drivers. I'm in the break-in period, or maybe we should call it the "get acquainted period". Every day I look forward fo coming home and listening. Any suggestions on the perfect pre?

monogan: Which AR preamps have you used?