Tube Rolling the Jolida/Black Ice dsd Dac


So I recently purchased the Jolida/Black Ice dsd dac and and a pair of Psvane 12ax7’s.  Played thru about 50 hours and while the soundstage opened up some, in my system detail seemed a little rounded off.  They probably need more hours, and  I recognize these are highly subjective impressions and system dependent, but then a friend gave me a pair of Fisher-era Telefunken’s to play with and I have tons of inner detail, imaging and a wide soundstage.  What I do find, however, is I have turn the volume up further on my passive pre-amp.  I have a pair of 50’s era RCA grey plates coming next week.  Pretty easy to go down the rabbit hole playing with tubes, but that’s half the fun of it.  Curious as to what other tubes Jolida dac owners are using. My system: NuForce STA-200 amp, Luminous Audio pre-amp with Walker mod, Bluesound Node2, and DIY LeCleach horn speakers. Mix of Cullen and Transparent Cables.
renisnceman
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My wife and I listen to music a lot together. Over the years, I’ve realized that she has a really good ear, and can usually articulate changes in equipment very well, often without being told changes have been made. She’s often my unwitting “blind” test for snake oil vs actual improvements.

Accordingly, she was unaware that I swapped the NOS Mullard tubes in a few days ago, and last night was our first chance to really sit down and listen to music together.

After about an hour, she turned to me out of the blue and said “I think your tubes may be finally... how do I describe it, warmed up!? It sounds like everything is just warm and ready to play music. Did you turn them on longer than normal? There’s more fullness and everything is blended together perfectly, even when there’s chaos in the mix.”

I told her about the new tubes, and we listened for a couple more hours, each taking turns pointing out how some part of some song sounded somehow new, and realizing that there’s a lot more detail and music and drive that’s just been unlocked. Nice to see that she has once again confirmed not only her ability to listen intently, but also the validity of the changes I was hearing as well.

I probably have 40-ish hours on the new tubes, so they may continue to settle in this week. Can’t say it enough, if you have this DAC, these are the tubes you want.

For roughly $1000 total (I got a deal on the Black Ice), I have a DAC that I would feel confident putting head to head with anything else out there. Absolutely fantastic!
Good to hear that you're enjoying the Mullards so much, jonstine.  It's amazing what a difference tubes or other small changes can make in our systems.


@jonstine I’m the OP- been using NOS Telefunkens that I’m pretty happy with.  Are these the British Mullards from Upscale you’re referring to?  Pretty tempting.  About 2 weeks ago I replaced the fuse with a SR Orange- pretty nice upgrade.
Old Mullards make everything sound great.  You can throw them in garbage and the trash collector will sing like Frank Sinatra on trash day..  
@renisnceman, yes those are the ones. I selected Kevin’s stash level and added cryo option (what the hell).

Now I need to go research the fuse replacement! Thanks for the heads up on that.