I have only heard the TT2 in shops.
The realism, spaciousness and imaging is outstanding.
My next upgrade will be the TT2 versus my Qutest and amp. (Taurus MKII at the moment.)
While the TT2 sounds thinner it is much more lifelike not just in timbre but in realism and space.
Sure, £4000 is a lot of money versus £2000 which is the price of Qutest and a good secondhand amp like the Taurus.
I am quite happy with Qutest+Taurus MKII until TT2 becomes more affordable (Below £3000).
I am still interested in hearing thoughts about Hugo2 alone versus amp combos like mine. I hear convincing opinions on both sides. Wish I could have a Hugo2 to try it against my Qutest/Taurus combo.
I would be sceptical about judging the TT2 thinner than Hugo 2, from a shop audition. It took me days to get used to its signature at home, after replacing Hugo 2.
When I got my TT2 I was able to take out the Hugo 2 and put in the TT2. Same music - same partnering kit. Immediately, I could hear that it was no way thinner, it was richer but that took time to really appreciate. I could hear the TT2 balance was perfectly neutral. However there was so much going on with the TT2's performance, that it took days to get used to.
Initially I think, maybe the TT2 could be mistaken for being thin, because it's more transparent. It's really quite surprising how it can be richer, but a darker background. It's transparency is also completely evident when listening off axis, which I do quite a lot. It is richer in tonal palette than the Hugo 2, but the TT2 is even more 'hear-through'. That's quite hard to believe given how hear through the Hugo 2 is, and off axis.
I don't think of the TT2 as thicker blobs of sound in space, compared to Hugo 2. I think of the TT2 as like the Hugo 2, but moderately richer sounding. (Additionally the TT2 has quite a bit more precision, clearer, cleaner, smoother, more emotive, more detail, texture, cohesion, etc.)
Another quality to enjoy with TT2, is when you get tracks with nice timbral sounds popping about in the music. Sounds with space around them, and clear difference in timbre to other sounds around. E.g. In Love is to Blame - from Dido. On the Hugo 2 those sort of acoustical moments sounds blissful and smooth. On the TT2 they sound genuinely extraordinary; (at CD quality of course). Here is (the low resolution) YouTube of it.
Generally though, it took me a while to hear all the new texture and detail, as music as a whole. All this new stuff sounded separate to sounds in music that I heard with Hugo 2. (I think on that point, one could be forgiven for suspecting thinness, as new sounds seemed detached.) That was on music I knew off by heart. Some transients were just so fast, and it took me by surprise. Like transients on vocals starting with the letter T, came up so fast and exact, genuinely startled me first time. (That was on music I knew well with Hugo 2.)
On new music it was just what it was as I had nothing to compare to; it sounded brilliant of course.
I was sure on one occasion clearly, the TT2 made a note that I knew well on the Hugo 2, sound lower pitched. I heard that a few times marginally in various music. The TT2's more accurate tonal palette, provided more detail of the notes, and that seemed to include some fractionally lower tone. However this all just might be a richer presentation not pitched lower, but to me on occasion sounding lower.
Early on with the TT2, I honestly sometimes would be listening and thinking, "What?". Stuff sounded really quite new. Occasionally is sounded even bizarre, but in a positive way. Like, "What really, that is what parts of this music sounds like.". On this bizarre theme, the TT2 is also analogous to watching HD TV, compared to SD. The TT2 is sometimes so detailed that it seems unreal, or over the top, or too good to be true. Again, it was the whole sonic landscape taking time to get used to.
These points are in no way critical of the Hugo 2 either. Hugo 2 is off the charts!
EDIT: Additionally, in the UK we have something called 'distance selling regulations'. Since I paid my TT2 deposit by telephone, my TT2 purchase fell under those regulations. It was because I was committed to the purchase by deposit, before I could evaluate the TT2. This entitled me to fourteen days grace after taking the TT2 home. By law I can check over the TT2 thoroughly, and decide freely if I wanted it. I could legally return it just over a 'change of mind'. If the TT2 had a thin or thinner signature than the Hugo 2, I would simply have returned it, no question. I would not have bought and kept a £4K lemon. …… Also because my TT2 had a slightly out of alignment DX coaxial output, I additionally had a thirty day return window. In the UK if we find any fault, (even minor defect), within thirty days we can return the item for a refund. (After thirty days it's either repair or replace, at retailer discretion.) I had easily enough time to evaluate the TT2, and it was going nowhere.