I was sure I was going to buy the MZ3, so far as in actually making a purchase. However after a visit from the ghost of audio past @NickMimi and then having a long conversation with the ghost of audio future @M0N. I had an epiphany, one component to rule them all. The reason I went for the UL is because it’s both a great HP amp and it’s also serving as a great integrated amp.
So yeah an expensive component but it’s been a great swiss army knife type of component. So yes actually, I’d say that the UL is similar to the HPA-1. That said there’s better out there, you know how this place works. but I bought the UL because my room is small, If I want to listen to my 2 CH system using the HP out while I’m working on my desk, I can. So it didn’t make a lot sense for me to chase an high end system for use on the PC and the level of 2 CH quality I was chasing.
Now some anecdotal ramblings that may or may not mean anything to you but in case they do. lol
When I used the Weiss on the HPA-1 it was almost too much, I was blinded by detail I believe I’m a little treble sensitive but the combination of the HPA-1, the Weiss and the D8KP was a lot of detail to handle, and I couldn’t use it for long term listening. I don’t think any of the three components are that way on their own, but when strung together it wasn’t for me. The reason I wound up parting with the HPA-1 which I regret doing.
The Mojo EVO or I’m sure your X would have been a different story in that chain and frankly I would have stopped there. I don’t know all of the cans that pair well with the Pass but it’s reputation is well earned and it’s also a very competent pre. (The Burson is also a very competent pre IMO)
I don’t hate the Burson BTW, I think it’s an amp that punches above it’s weight by quite a margin for it’s price. It’s just that there are better out there for the price range, and the Bryston BHA-1 is one of those that are better for the same price. Actually the Bryston gives the Pass a run for the money at half the cost.
It also occurred to me that when LTA was showing off their new DAC, the two amps they had it connected to were the UL and their new Electrostatic HP amp. That probably says everything you need to know about where they stand.
I keep convincing myself that the BF2, RNHP and the Clear I’ve currently plugged into it is more than enough. I’m convincing myself because the alternative is throwing $5K more at a stack that for me is just not necessary given that I can use my UL that’s sitting six feet away from my desk.
So to summarize, for me, an LTA UL+ left me with a very broad multipurpose tool that pushed me much farther up the audio game than if had I purchased just the MZ3 as a HP amp as I was going to originally. It’s at a level where I’m likely not going to move up from (I’m just a handful of years from retirement) as I’'d have to plunk down a substantial amount of money that I’d rather throw into my 401k instead. Maybe my current viewpoint will change, but I’m just in a happy audio place right now, so might as well enjoy it.