Yeah, this is a bit like religion. I remember my OG A2's evolution over the first week it was powered up, for sure, if not longer. I believe that once the initial burn-in is 'complete', Yggy seems to "come up to speed" faster on a cold start. I think that the entire device operates a lot better when it's at operating temperature, and that might take 20-30 minutes from a cold start.
I generally leave my OG A2 on 24x7, unless I am traveling - in which case everything is powered down at the Furman's main breaker.
Sorry, can't say. I only have the OG A2. It could be possible that the discrete A2 output stage might take longer to come up into its operating range.
Oh, HELL yes... this is what I'm experiencing now with the MiB. It was powered up first time Monday, upstairs, driving my OG Jot balanced. Source was Radio Paradise FLAC Main Mix. Right out of the box, it sounded special - airy and open - with the HD600s, balanced. A couple of hours later, I swapped in the Drop HD6XX with a balanced cable and was blown away with how open these (generally dark IMHO) phones sounded.
Tuesday night, I swapped MiB into the main system, and brought OG upstairs to talk with the Jotunheim. MiB has been playing music continuously since then, and it has evolved dramatically.
- First, it was open and wide and quite enchanting, but 'thready'/thin in the lower ranges
- ...and I kept wanting to turn down 2K & 6K on Loki
- But I did not; I persevered
- And then it smoothed out, a lot
- Then the Bass Fairy came to visit on Wednesday afternoon, and took up residence
- ...and now on Thursday I am listening to Radiohead's "Let Down", playing downstairs while I'm sitting upstairs
- And I realize how lucky I am to own these two Yggdrasils. They are very similar w/r/t their performances in the time domain; with a "needle drop" pacing that sounds a lot like a well-spun LP. Both OG and MiB do this. Timing accuracy is a Yggdrasil family tradition
- OG A2 is still my standard; it feels 100% analog to me. I love this MiB DAC, though
- Because...
- + MiB presents at a level of clarity / air / space that I've never heard before
- ...at first it was wide open and bright / clear but a bit etched and certainly bass-light
- But two days later it is crystal clear, and the low end is super-controlled and way deep, and if the notes are in the song - it can be room-shaking!
- And it is still evolving, as the bass fills in even more and the highs settle in
- "The Expanse", soundtrack by Clinton Shorter... title track
- There are sub-sonics in the intro
- MiB extracts bass you can't even hear, only can only feel <- @ArmchairPhilosopher pls note
- and the S-P-A-C-E between the instruments and the performers simply continues to expand to fill the room
- In my humble opinion, MiB is close to clinically perfect in its conversion and presentation of the digital signal you give it
- - MiB is less forgiving of bad recordings than OG
- Probably because it is so accurate and resolving
- But omg, a good recording results in a stunning image with MiB
I think the majority of the start-up time for the electronics - DAC, pre and power amps, equalizers.
Since my DAC is always on, and the Tyrs are in stand-by, I can be sounding good in a few minutes. On a restart after a cold shutdown, I totally agree with your first sentence - it takes a while.
My chair doesn't move, but I do, and I find that the overall sweet spot for my setup is bigger than I expected... and your hearing is fine. I'm listening for things that you might not be familiar with, yet. But that's because I am obsessive-compulsive, you should avoid being like me and just enjoy the music. <G>
45 watts is a small price to pay for the performance of the power supply in Yggdrasil. <g>