Pass INT-30A with Acoustic Zen Adagio

It would be helpful to know the rest of your system, cables in particular. Particularly if you are coming from tubes and are using silver cables, to make a gross generalization, the combo of SS and silver can certainly come across as bright or analytical. Perhaps some experimenting with ancillaries might be done before you start swapping out equipment and speakers.

 I had a Pass x250.5 and a 150.5 amp a few years ago,Focal Utopias,Dynaudio C4 and then Raidho C3s at that time as well..The best combo was with the C4s with the Pass stuff .I wound up with a Plinius amp running the C4s which I really liked if I remember correctly then a MC402 which actually sounded better to me as it had less speed and accuracy I guess,if that makes sense.A far as this integrated you have I heard it with Dynaudios(not sure of the model) which always seemed a speaker paired with Pass and Wilsons.I actually just bought a newer Plinius this time as  an integrated,havent received it yet but hoping it will do what I want it to.I know this is vague but I wasn't taking notes and have no speaker suggestions for you.

Forgive another brain fart on the Pass 30A which I find IS based on the 30.5 amp. But you knew that. :-)

Lots of great input here on the topic, thanks guys.  

Newbee: If you prefer tubes like I do, then I'm afraid the Pass may not be your way out of tubes completely.  I thought it might be the way for me, but I am not realizing that dream.  It's very difficult building a system based on reviews and articles online.  For a while there, I was staying firm on my personal policy of never buying anything before I heard it, but due to the limited selection at dealers in my area, I had no choice but to buy online.  I then tried sticking only to online sellers that have a trial period, but I even slipped on that one too and got bit by that.  I'd love to try the Silverlines, but could only do it if I had a way to try them risk-free.  But they do sound promising based on your description.

jond: The rest of my system leans towards warm sounding ancillaries.  My interconnects are both balanced and single-ended Acoustic Zen Matrix Ref II (PCOCC copper), and Acoustic Zen Satori speaker cables.  These cables are some of the most organic sounding I've heard for the money.  My DAC is a PS Audio DirectStream running the 1.2.1 firmeware, which I find to be the most organic sounding of all the firmwares.  My analog setup is a Rega RP3 with Elys 2, and a Vincent Audio PHO 8 phono stage.

missioncoonery: the Mac amps have sort of been on my radar, since they seem to have a sound that I would like.  However, I've always got the impression that they were a tad overpriced.  I've read that they haven't changed their designs much in the last 30 years, but not sure if that is entirely true.  Either way, value is all in the eye of the beholder.  If they provide a sound that is irreplaceable, then I may find it well worth the money.

steakster: I have tried a few different amps with my Acoustic Zens.  I've actually only owned the Adagios for about 3 months so far.  Prior to that I owned a pair of Golden Ear Triton 3's.  For several years, I owned a PrimaLuna Prologue Two and a Yamaha A-S2000 (winter and summer time systems, since my listening room used to be a small upstairs bedroom).  I upgraded to a PrimaLuna Dialogue Premium before I got my Adagios, and found the combination to be a tad too aggressive for my tastes. This was the main reason for me getting the Pass INT-30A, as I thought it would be the end-all-be-all in terms of smoothness, liquidity, and warmth.  I was rather disappointed to find that this was not achieved when combined with the Adagios.

My local dealer sells Rogue Audio amps, and I am planning to do an audition sometime this week.  Based on the reviews, I'm not sure that it will have the sound that I am craving.  It puts out 100 watts push-pull with KT120 tubes, but 100 watts means it is driving those tubes hard.  I expect to hear a decent amount of grain (also something that the Pass was absolutely exceptional with), but as long as that does not manifest as aggressiveness in the treble, I may be ok with it, as long as I get a nice enjoyable musical sound.