Forums - Cryogen Processing my UFO25

JOMAN

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Posts: 680

Cryogen Processing my UFO25
02/12/23 at 13:00:38

Well, my UFO25 is off to Wathen Audiophile for processing. When completed and returned the CSP3-A and the UFO25 will have been "CryoToned" and will have a full set of Cryotone tubes. After some hours on the processed UFO25 I'll revisit the tube complement to determine which combination of CryoTone tubes will end up being my "end" game choice.

It will likely be sometime in the second half of March before I can give an initial report. What I can tell right now is that I haven't had this much fun and enjoyment since the early days when I started in this hobby.

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Tony Seasoned Member "Life without ..music is inconceivable" A.Einsteln Posts: 426	Re: Cryogen Processing my UFO25 Reply #1 - 02/12/23 at 14:57:07 Very cool JOMAN; I look forward to your report.
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CAJames

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"I've run every
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lane."

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Re: Cryogen Processing my UFO25
Reply #2 - 02/12/23 at 16:45:56

Quote:

Posted by: Tony Posted on: Today at 06:57:07

Very cool JOMAN...

^^^ Good one.

But seriously, I look forward to your report as well. I'm still not sure I want to spend the $$$ on cryo tubes, but for some reason cryo'ing the whole amp makes a lot more sense to me. Esp. if you'd be willing to try the amp with some of your pre-Cryotone tubes.

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[FOOBAR2000 | Jay's CDT2 MRK3] -> Denafrips Terminator 2 + Gaia
Sumiko Pearwood -> Mapleknoll Athena -> Luxman SUT -> Maple-tree Phono 3E
Woo WA22 -> Space-tech 300B , 2x UFO25s on order
Omega SAM , Hifiman Arya, Senn HD-650

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4krow

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IMAGINE WHIRLLED
PEAS

Posts: 1543

Re: Cryogen Processing my UFO25
Reply #3 - 02/12/23 at 17:21:35

Definitely there must be some advantages to whatever disadvantages of cryofreezing. Metals do change with this treatment, but I also wonder what effect it might have on say the grease/lube inside of the potentiometers. Maybe no different than my truck acting like a tank when it is -20 around here, and then returning to normal after the temps rise again. I am also looking forward to hear of any changes after this process is done.

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JOMAN

Seasoned Member

Posts: 680

Re: Cryogen Processing my UFO25
Reply #4 - 02/12/23 at 23:12:30

Quote:

Esp. if you'd be willing to try the amp with some of your pre-Cryotone tubes.

I don't mind doing that except that I no longer have some of the NOS tubes that made up the complement that I settled on in the UFO25.

This is what I had:
Rectifier: GZ34 Metal Base - Sold both
Power Tubes: 6P15PEV Red Tip (not treated)
Input Tube: TF PCC189, Valvo PCC 88 D Getter, ADZAM E188CC SQ (depending on what was in my CSP3-A). Some of these may sell as I'll be advertising them locally.

So the best comparison would be the 6P15PEV Red Tip with the CryoTone EL84-WC. The Rectifier would be the Cryotone 5AR4-WC and the input and the input the CryoTone 12AU7-WCL w/adapter. Keep in mind that I have already compared the 6P15PEV with the CryoTone EL84-WC and even with the advantage of the Hazen Grid Mod for the 6P15PEV the Cryotone EL84-WC was drastically different and preferred for me.

Would that change after the UFO25 is treated? I hope so. But the that would change for both tubes. So the question would be; does treating the UFO25 narrow the gap between those tubes?

If your good with that I'll be happy to oblige.

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CAJames Seasoned Member "I've run every red light on memory lane." Posts: 1020	Re: Cryogen Processing my UFO25 Reply #5 - 02/13/23 at 03:24:16 Honestly, you do such a great job of describing what you hear I just want to know what you think the difference is. However you want to measure it. I expect you'll want to try different tubes regardless and cryo'd or not that will be very interesting.
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JOMAN Seasoned Member Posts: 680	Re: Cryogen Processing my UFO25 Reply #6 - 02/13/23 at 04:42:33 OK, will do. It probably won't be till the second half of next month.
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Glenn Verified Member Posts: 17	Re: Cryogen Processing my UFO25 Reply #7 - 05/01/23 at 15:40:52 Hi. Wondering if you have an update on the Cryogen Processing?
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Tony Seasoned Member "Life without ..music is inconceivable" A.Einsteln Posts: 426	Re: Cryogen Processing my UFO25 Reply #8 - 05/01/23 at 18:37:00 +1
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JOMAN

Seasoned Member

Posts: 680

Re: Cryogen Processing my UFO25
Reply #9 - 05/05/23 at 21:18:36

Sorry for the late response. Been distracted with a purchase of a house some distance away.

No update yet. I should be getting it back week following next assuming it ships on Monday. I asked Don to take his time listening to it after it's processed. So now that Axpona is over and the test listening is over I should have it back and a report this month.

A couple of things that I do know is that processing it didn't hurt it and evidently the results are quite significant, more so than even with the CSP3-A.

It's been running his new OB speakers that have four 15" drivers without any issues and the UFO25 will run them at levels that louder than he is comfortable with... sooooo... I do have room for those speakers in the new home.... hmmmmmmmm😬

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Tony Seasoned Member "Life without ..music is inconceivable" A.Einsteln Posts: 426	Re: Cryogen Processing my UFO25 Reply #10 - 05/05/23 at 22:30:07 Joman, Very interesting. I look forward to your review of this process. Also, congrats on the new home. I have a question about your reference to "CSP3-A" What does the "-A" refer to? You have been using it since 2018, but I could not find an explanation. Thanks, Tony
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Lon Seasoned Member "Love without guts is worthless!" Philip K. Dick Posts: 21444	Re: Cryogen Processing my UFO25 Reply #11 - 05/05/23 at 22:31:36 I think John is referring to the preamp that way as it is a CSP3 with all the mods present in the 25th anniversary CSP3.
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JOMAN

Seasoned Member

Posts: 680

Re: Cryogen Processing my UFO25
Reply #12 - 05/05/23 at 22:55:06

Hey Tony,

Lon is correct. Not only did my CSP3 have the complete Anniversary mods it was completely re worked with Miflex caps added. Steve referred to it as the most "pimped" CSP3 at that time. So I refer to it as my CSP3-A, to make a long story short.

I then sent it in to Wathen for processing. When I got it back it after the processing it was as if it completely disappeared. Don Thomas felt that the UFO25 would benefit to even a greater degree.

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