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NOS RCA 5v4g Rectifiers (Read 634 times)
Neil Jackson
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NOS RCA 5v4g Rectifiers
02/10/24 at 01:02:30  
Hi,

I recently bought some NOS RCA 5v4g rectifiers for my Torii MK II. Can anyone make a comparison statement about these tubes versus the 5u4g or the 5u4gb? I am currently running the 5u4g.

Thanks in advance for any help.

Neil Jackson
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CAJames
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Re: NOS RCA 5v4g Rectifiers
Reply #1 - 02/10/24 at 04:05:00  
There are a lot of different 5U4 type tubes out there, with a lot of different sounds. I don't have a Torii, but my experience with RCA 5V4Gs in UFO amps is they are warmer than average and give a nice "tubey" sound. Maybe just a little less detailed and rolled off at the frequency extremes. They are nice tubes, esp. for the price. Please post your impressions.
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Neil Jackson
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Re: NOS RCA 5v4g Rectifiers
Reply #2 - 02/10/24 at 04:11:47  
Thanks for your reply. I certainly will!
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Neil Jackson
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Re: NOS RCA 5v4g Rectifiers
Reply #3 - 02/10/24 at 19:16:09  
Anyone else care to chime in? Where is Lon?
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Lon
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Re: NOS RCA 5v4g Rectifiers
Reply #4 - 02/10/24 at 22:08:37  
I'm pretty much where James is. I like RCA best and I used to LOVE RCA 5V4G in my earlier (pre-UFO) Zen amps and CSP# preamps. But as time passed and amps and preamps had UFO transformers and I opted for Anniversary mods. . . I found myself drawn time after time to the Sophia Electric 274B Aqua rectifiers which had to my ears a very similar nature to the RCAs but with more speed and while full, a tighter signature.
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Neil Jackson
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Re: NOS RCA 5v4g Rectifiers
Reply #5 - 02/10/24 at 22:22:57  
Interesting. Thanks Lon!
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