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Shuguang 274b rectifiers (Read 4152 times)
jaco03
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Shuguang 274b rectifiers
07/02/20 at 09:28:27
 
Just wondering if the shuguang 274b is compatible with my 2013
Se84 zenamp? Any advice much appreciated
Thanks in advance.
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CAJames
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Re: Shuguang 274b rectifiers
Reply #1 - 07/02/20 at 16:28:40
 
Maybe  ;). A "true" 274B needs to see a smaller capacitor than a 5U4/5R4/GZ34 rectifier but there a plenty of people who say the Shuguang isn't a true 274B and is Ok with higher capacitance. If the capacitance is to high the tube will still work, it will just wear out faster.

I can't give you a straight answer (and the answer almost certainly varies from tube to tube) but what I know for sure is I bought some for my (Woo Audio) preamp/headphone amp and wasn't impressed. I'm an unrepentant NOS guy anyway, but IMO there are so many other rectifiers, both NOS and current production that are compatible that I wouldn't mess with it. But that is just my opinion, I've got a couple with really low hours I'd sell you cheap if you want to try it  :).
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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 -> 2x UFO25s, balanced monos
Omega SAM , Hifiman Arya, Senn HD-650
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jaco03
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Re: Shuguang 274b rectifiers
Reply #2 - 07/03/20 at 08:16:38
 
Thanks James. All the decware site says is certain 274bs and I am not technical enough to know which is compatible  If mine goes
I’ll just get one off decware.
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Lon
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Re: Shuguang 274b rectifiers
Reply #3 - 07/03/20 at 13:28:03
 
It seems from all that I read that this Shuguang is compatible with the Decware amps. I believe in fact that the Valve Audio is likely a Shuguang manufactured tube itself.
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GroovySauce
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Re: Shuguang 274b rectifiers
Reply #4 - 07/03/20 at 15:19:27
 
For another option.  Check out thetubestore.com preferred series 274b / 5u4  It’s made in the Shuguang factory.  Comes with a 6 month warranty.  I’ve been enjoying it in a UFO25th.  It is a tight fit on my ZP3 needed to tilt the tube a little so it doesn’t hit the transformer.  Or get a socket saver and you’re good to go.
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Maximus NEO TT|ViV Rigid Float TA | Phasemation PP-200 or Hana ML | Sutherland Little Loco MK2 | Innuos ZENith MK3 | LampizatOr GA TRP | EMIA Remote Autoformer | Add-Powr Sorcer x4 | Snake River Audio Cables | PAP Quintet 15 1.6 Voxativ |Torus AVR15|AF Treatment
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CAJames
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Re: Shuguang 274b rectifiers
Reply #5 - 07/03/20 at 15:58:13
 
Yes, I got mine from TheTubeStore. The question is do you like the sound?
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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 -> 2x UFO25s, balanced monos
Omega SAM , Hifiman Arya, Senn HD-650
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jaco03
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Posts: 23
Re: Shuguang 274b rectifiers
Reply #6 - 07/04/20 at 08:12:11
 
Hi Lon and groovy
Thanks for chiming in. Appreciate it.
Cheers.
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CAJames
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Re: Shuguang 274b rectifiers
Reply #7 - 04/04/21 at 21:21:35
 
So down at the bottom of my tube caddy I have a pair of Tubestore.com Shuguang "Preferred" 5U4G/274B rectifiers I bought before I knew what I was doing, and I finally got around to trying them in my UFOs. And I'll be darned if they don't sound really good. Not my favorites, for sure, but I could live with them. Of course I have no idea about how long they last, which is my primary concern with current production, but if anyone is looking for current production rectifier that isn’t crazy expensive I can recommend these.
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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 -> 2x UFO25s, balanced monos
Omega SAM , Hifiman Arya, Senn HD-650
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