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Best 5U4G rectifier

160.62.7.250

Posted on December 1, 2016 at 07:12:58
morricab
Reviewer

Posts: 8477
Location: switzerland
Joined: April 1, 2005
I now have an Ayon Crossfire III that uses a 5U4G rectifier for the input and driver tubes. I am currently using a NOS Svetlana "Winged C" that sounds good and seems to be well balanced.

The question is, what is significantly better than this one (I also have a NOS Sylvania 5U4GB that I haven't tried yet) from the NOS world that is not "unobtainium" or outrageous priced. How would this compare to new made ones from Emission Labs, China, Ayon (rebadged EML?), KR Audio, Sophia electric etc.

I have a chance to get the Ayon mesh plate ones that are absolutely HUGE compared to the typical NOS 5U4G. They look more like a big output tube.

I will be giving a trial on those because I am currently reviewing the Ayon Vulcan Evo monos that are using this beastly 5U4G.

I have not really done a lot of rectifier rolling tube it made a big difference in a Lampizator DAC trial I was a part of a month ago. Also, it made a pretty big difference with a PureSound A30 amp that I had.

 

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RE: Best 5U4G rectifier, posted on December 1, 2016 at 08:41:45
Frihed89
Audiophile

Posts: 15216
Location: Copenhagen
Joined: March 21, 2005
U52. Be prepared to pay $500 or more for each.

 

RE: Best 5U4G rectifier, posted on December 1, 2016 at 16:20:53
Jim Hodgson
Audiophile

Posts: 376
Location: New York City
Joined: March 9, 2006
After rolling a bunch of vintage American 5U4Gs (and not any of the new production offerings or ultra-expensive vintage variants), I remained with the Tung-Sol 5U4G with top getter -- which turns out to be often recommended today. I don't know current pricing, but something tells me it will be affordable relative to the value of that amplifier.

You might find something useful in the thread below?

 

RE: Mullard GZ37, posted on December 1, 2016 at 19:46:06
DAK
Audiophile

Posts: 1904
Location: PACIFIC
Joined: August 8, 2010
Contributor
  Since:
December 0, 0000
Another one that is rated among the best. You need to watch the value of your C1 if not a choke loaded power supply

 

RE: Best 5U4G rectifier, posted on December 6, 2016 at 08:09:53
Frihed89
Audiophile

Posts: 15216
Location: Copenhagen
Joined: March 21, 2005
There is also the VT244, which I think was a military version of the 5U4G, put out by US tube mfrs. I prefer KenRad and RCA

 

RE: Best 5U4G rectifier, posted on December 12, 2016 at 08:05:25
sony6060
Audiophile

Posts: 728
Location: SE MI
Joined: August 8, 2014
The simple RCA 5U4G sounded great to my ears.

 

RE: Best 5U4G rectifier, posted on December 27, 2016 at 03:41:14
Walt1
Audiophile

Posts: 3
Joined: October 17, 2009
Congrats on your new amp. In general I had good success with Ken Rad VT244.

 

RE: Best 5U4G rectifier, posted on December 29, 2016 at 07:55:07
krankkall
Audiophile

Posts: 296
Location: New Mexico
Joined: April 5, 2014
Almost any American-made 5U4G tube should do fine.

Steve

 

RE: Best 5U4G rectifier, posted on December 29, 2016 at 10:03:50
lokie
Audiophile

Posts: 1252
Location: Georgia, USA
Joined: January 28, 2003
Timely thread. Need one for a new (to me) pr-amp.

The manufacturer recommends Sophia Meshplate 274B - $200.

There's a couple of new caps installed that I want to burn in w something a little less expensive. I'll want a back up anyway.

 

RE: Best 5U4G rectifier, posted on January 1, 2017 at 06:16:11
sony6060
Audiophile

Posts: 728
Location: SE MI
Joined: August 8, 2014
I second the Tung Sol 5U4GB top getter. It is as good as the RCA 5U4G in a smaller package.

 

RE: Best 5U4G rectifier, posted on January 1, 2017 at 06:51:09
h00hbt
Audiophile

Posts: 464
Location: Sweet spot
Joined: July 8, 2007
Anyone tried subbing the 5U4G with VU71?

 

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