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Tubes for 25th (Read 9286 times)
Ace-Tone
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Re: Tubes for 25th
Reply #50 - 07/22/19 at 22:14:39
 
Regarding the Pair of OA3 tubes by the transformer...anyone try other VR's in those slots?
I tried a pair of Raytheon OD3W...sound very good, and the meters register approx 5 points lower.  Now reading 23-24.
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SE84UFO25, ZP3, Zstage, ZR2, ZSB, DM947 Monoliths 946+mid
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jslateiv
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Re: Tubes for 25th
Reply #51 - 07/23/19 at 01:24:59
 
I've tried the OD3W's, OC3's and a few variety of OA3's.  I ended up happy with the OA3's.  Been a while since I rolled though so probably need to revisit  now that everything has an additional ~600 hrs since the last switch up.   Lovin an E288CC on high bias with an OC3 though with the OA3's in the back!   Rect. is the SE Aqua 284.
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VPI Scout (SS Zephyr MIMC) > Lundahl 1933 SUT > ZP3 > Auralic Aries Mini > PSA DSD w/BridgeII > PSA BHK Pre > 25th Anniv. Zen Amp/Torii Jr./NuForce STA200/TubeLab 300B > Triangle Celius 202 / Zu Omen (Hi-Mod) : PSA P12 : Iconoclast Cabling
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Vooraphile
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Re: Tubes for 25th
Reply #52 - 12/12/19 at 12:42:25
 
Anyone roll the SE84UFO25 power tube with EL84..? Is this safe or possible.?
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Oppo UDP205-jb or Planar 3
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Palomino
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Re: Tubes for 25th
Reply #53 - 12/12/19 at 12:53:00
 
The forum member who tried this and had issues was Badwolf.  You might PM him.
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i7 Mac Mini with LPSU/SSD running Audirvana 3.2, Uptone Audio Regen on LPSU, TEAC UD503, Decware Silver ICs, 25th Anniversary Zen, PS Audio P5 Power Supply, PS Audio Power Cords, Vintage Western Electric 16g Speaker wires, DIY Open Baffle Speakers
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Vooraphile
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Re: Tubes for 25th
Reply #54 - 12/13/19 at 15:15:20
 
Alright.. Thank you.
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Oppo UDP205-jb or Planar 3
Teac NT505 to ZBit
CSP3-25 to SE84UFO25
DSG. DSRII. DHC-1. ZSTYX.
Triangle Quartet 92dB
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Lon
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Re: Tubes for 25th
Reply #55 - 12/13/19 at 15:55:31
 
The product page does list the EL84 as one of the two output tube types.

https://www.decware.com/newsite/SE84UFO25.html

and the manual:

https://www.decware.com/newsite/SE84UFO25manual.pdf

The manual does note that the Hazen Grid Mod is not activated with the EL84, but that is not completely prohibitive. . . .

I've used the EL84 with Zen amps before (Rev. A, C, Select) and with my Taboo Mk III and Mk IV, and with my current 25th Anniversary SE84UFO3 Monoblocks but though I've really enjoyed them in the earlier amps the stock tubes from Steve clearly sound best to me in the Monoblocks.
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HR-1,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th.Taboo Mk IVI;Rega RP3 w/25th mods PS Audio:DMP+DSD,P10,NPC,PowerBases,AC-12 pcs; Mapleshade:SamsonV2+V3,double helix Plus spkr cbl;Oppo UDP205;VooDoo:Cremona+Amati,Iso-Pods; headphones: PM1,HD800S,LCD-
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JOMAN
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Re: Tubes for 25th
Reply #56 - 12/13/19 at 21:57:15
 
Same experience as Lonsí on the power tubes.  I have some TAD EL84STR that I used in my UFO2 for a time and tried them in my UFO25.  The stock power tubes are in for keeps.
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Palomino
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Re: Tubes for 25th
Reply #57 - 12/13/19 at 22:17:53
 
Iíll ask Badwolf what tubes he was using and what Steve said.  Heís pretty experienced so I canít imagine him trying something that wasnít listed in the manual.
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i7 Mac Mini with LPSU/SSD running Audirvana 3.2, Uptone Audio Regen on LPSU, TEAC UD503, Decware Silver ICs, 25th Anniversary Zen, PS Audio P5 Power Supply, PS Audio Power Cords, Vintage Western Electric 16g Speaker wires, DIY Open Baffle Speakers
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