Pass INT-30A with Acoustic Zen Adagio

Missioncoonery: I appreciate the response.  Glad to hear there is someone else that shares this opinion.  I was trying so hard to figure out if it was my speakers or amp, but I have heard a few other amps with the Adagios, and I did have them sounding pretty decent at one point.  It really is a shame because the Pass is such a quite, well-posed, dynamic amplifier without any sort of grain or hash in the treble.  I don't think I've ever heard strings produced so nicely and accurately.  If the presentation was less on the analytical side, this would have been it for me.

What speakers did you try with the Pass amp?

Depends on which model you select I suppose, they are all voiced differently. But except for the late model Sonata which was a 'bit hot' they are fairly balanced with a warm(er) upper-bass midrange.  On older model Preludes (or other models) you might want to be careful of ones that have metal tweeters, and you will note that the Prelude Pluses have nothing in common with the earlier Preludes at all. They have also gotten excellent reviews.

A confession first. I was thinking about the Pass 30.5 integrated, not the earlier model. That said, I will also admit that what has kept me back from buying one is that I really do prefer tubes, not just the the good things that they can bring that is hard to get with SS but also the ability to tailor the sound to match speakers and other components in the system by just changing tubes.. 

I share your priorities, especially after having spent many years chasing the affordable audiophile dream as set forth by the magazines/ reviewers etc without finding anything that really fit. I then stumbled onto the Silverline Bolero's when you could get them at a more reasonable price. And they do it all for me. The have all Dynaudio drivers including Esotar tweeters (which really are a BIG deal). If you have a large room the LaFolia speakers might do well for you and are occasionally available at reasonable prices. They share many of the same drivers with the Boleros but do have back firing woofers that can be a drawback if not considered. Some of the Sonnetina's are also excellent as well. Fortunately there are quite a few reviews and threads on these speakers to help.

At the time I auditioned the Boleros at Silverline's shop I also listened to the small Minuets (stacked) driven by an inexpensive SS amp and unimpressive CD player. I dammed near bought them instead of the Bolero's, they were that good. 

FWIW the Silverlines are all designed by Alan Yun, one of the premier speaker designers in the business who, interestingly, is not a slave to some 'industry standard'. He has a really good ear, I think.

Hope that helps a bit. Oh, FWIW, if I were starting over today, I would get the Prelude Pluses and a good integrated tube amp and wait for the rare occasion that a pair of Boleros came up on the used market! :-)

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.