That makes me very curious, Greg.
And that is why 
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That itself says a lot.
I am finding Rossini Apex itself to be too good (and getting better day by day even after 4 months). So wondering how Vivaldi Apex wud sound like.
Regards,
Sourav
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Erno, and if I cannot, well, Iāll just have to continue to bear the burden.
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Please do let us know how you (try to) integrate the 2 setups. I guess analogue cabling and a Dodocus-like switch need to be used. I hope not a split XLR cable set. Or did you find a suitable preamp with a pass-through?
Yeah, this will be interesting. As I already have a Dodocus in the headphone stack, trying it out will be easy enough.
What is the distance between your Vivaldi stack and headphone stack?
Theyāre on two different floors, probably minimum of 30 feet distance. If Iām going to make this work, I will probably need to get my wifeās indulgence to move a vertical version of the headphone system into the living room.
How heigh is your living room? A vertical version of your headphone system will take some 
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Hi Greg,
Did you ever consider demoing the dCS Lina headamp?
Nah. Donāt need another DAC. I am pretty much end state in my headphone rack.
What is your headphone chain?
I meant the Lina headamp. It sounds wonderful together with my non-Apex Rossini DAC, so it must be truly great with your Vivaldi Apex.
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Nah, also donāt need another or replacement head amp. I am sure it sounds great. But I donāt feel a compelling sense of dissatisfaction with any of my head amps. To the contrary. Plus, thereās the whole electrostat/ribbon factor.
Source: ļ»æROON Nucleus+ (same that feeds speakers)
DAC: MSB Select II w/ network renderer (and Transport, which I rarely use)
Outputs:
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T2ā>Stax 009S, and probably 9000 (one on loan now from Ben)
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Mjolnir Carbon CCā>Stax 007 Mk1 & Mk2
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RAAL HSA-1bā>SR1a ribbon ear speakers
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Trafomatic Primaveraā>Susvara
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I would love to compare by my Susvara the dCS Lina headamp with the Trafomatic Primavera, but cannot demo the latter.
FWIW I love my Bartok with the Ferrom Oor headphone amp (plus Hypsos). This is a super fantastic system. Headphones include Dan Clark Audio Stealth and Expanse and the Meze Elite. Considering if I want to upgrade this system to Rossini Apex.
For two channel, Iām considering moving to powered speakers to downsize. Iāve gotten very used to headphones and I love that I donāt have to work hard to optimize a room for a two channel system, a room that has multiple uses.
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Yeah, I bought mine during the pandemic, ears unheard, but with the comfort of a good European friendās enthusiastic recommendation and a lot of time on the phone with the US distributor, and reviews of course. Were it not for the pandemic, I would happily have traveled to Serbia to demo the amp. But that wasnāt a possibility at the time. In fact, even if there had been local or regional demos available, nobody was open. So I took the plunge. Zero regrets. On the Primavera, the Sus are a match for the Stax and RAAL in many respects. The Sus and the ZMF VeritĆ© C are the closest things I have to ātraditionalā cans. They sound superb on the Primavera, though I use the ZMF mostly for desktop listening when I need isolation. The Focal Utopia also sounded about as good as I could get it to on the Primavera, it I never loved those headphones. Sold them soon after.
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Thanks Greg,
I am still curious to hear the Primavera prior to buying.
I know you liked this āFactory Tourā of Trafomatic Audio, and I know a lot of high end audio manufacturing is cottage industry, but I think this beats it to the point of doubt 
Oh yeah, I loved that! 
Seeing the amp itself in person, you would have no idea it did not come out of a high-end, CAD-assisted, Hollywood-style, sterile lab environment. Though I swear I smelled strong tobacco the first time I fired her up.
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How do you route to the different amps? Some form of switchbox or just plug/unplug?