[myphone]

Does anybody know if this is a Brimar Rectifier?(the Haltron on the left.)
I added a Phillips 5r4gys on the right for reference. A few differences between the two especially at the top. The Haltron cv717 has a different mica structure.



Edit: the brimar cv717 in the dubstep thread picture attached
( https://www.head-fi.org/threads/dub...mparison-rectifer-tube-rolling-thread.694525/ ) looks way different and more like the 5r4gys at the top.

I have one similar to the left, labeled as Brimar 5R4 (Foreign).

Saw a website describes it as GEC Marconi 5R4

 

[gibosi]

I have one similar to the left, labeled as Brimar 5R4 (Foreign).

Saw a website describes it as GEC Marconi 5R4

I am very certain that GEC Marconi didn't make this tube. And in fact, GEC Marconi never made the 5R4GY.

 

[Xcalibur255]

@Akiravelvet

Your photo is a bit on the blurry side but it matches the comparison photo gibosi provided IMO. I also own a Brimar 5R4GY with this same construction. Very nice tubes. The hanging filaments are pretty distinctive in this tube. There are others that do hung filaments, but in the Brimar it really catches the eye for some reason IMO.

The Philips and the Brimar are arguable the two must have tubes of this type IMO. There's nothing wrong with the more commonly found RCAs at all, but these two offer just a bit more in some ways.

 

[gibosi]

The only other European manufacturer of 5R4GY I am aware of is Fivre. Like most Fivre production, it has a fairly forward midrange, and in the right system I think it too is worth having.

 

[leftside]

The only other European manufacturer of 5R4GY I am aware of is Fivre. Like most Fivre production, it has a fairly forward midrange, and in the right system I think it too is worth having.

Picked up a bunch of those from an Italian friend of mine last year. They were very dusty and dirty with dirty pins - but cleaned up pretty good and tested well! I often use those rectifiers in my preamp and DAC.

 

[Smallpie]

The short answer is that it sure sounds like a Brimar 5R4GY.

The tube below on the right is definitely a Brimar 5R4G7, dated 1957. However, it's not clear to me who actually manufactured the tube on the left. I have seen it labeled as a Brimar, a Haltron and even an Italian Marconi. In the end, to my ears they both sound the same. So, since it sounds like a Brimar, I would recommend you buy which ever is the cheapest.

Thanks! Yea, mine looks a lot like the one on the left. I bought them from a person saying they were Brimar but the brimar in the dubstep thread looks way different.

I have two of these tubes and only need one so if anybody is looking for one let me know.

 

[myphone]

These are some of my 5R4G: left Brimar, middle Brimar foreign right Phillips. Different internal structure. Two closer photos are Brimar foreign

 

[Xcalibur255]

I don't like to speak ill of anybody, but that dubstep thread you speak of has bothered me since the day it was posted years ago. Many people new to tubes find posts like these and use them for buying advice to fill in the vacuum (ahem) in their early knowledge gaps and I think that particular comparison review post is doing those people a disservice in many cases.

 

[gibosi]

Since my ears are far from golden, much of what dubstep writes is meaningless to me. But I think the pictures are very good.

Below, a picture of a Fivre 5R4GY. Notice two bottom getters, the characters etched into the side of the glass and the shape of the top mica spacer.

 

[Xcalibur255]

Indeed, if it was just a picture post about identifying said tubes it would be a fantastic post.

 

[gibosi]

Thought I would change things up a bit and this evening rolled in a Valvo G4004 rectifier, keeping the four TS 6BX7 and a pair of NU Type 76. It sounds really good, but then those of us with GOTLs know that almost everything sounds good in a Glenn.

 

[jonathan c]

I don't like to speak ill of anybody, but that dubstep thread you speak of has bothered me since the day it was posted years ago. Many people new to tubes find posts like these and use them for buying advice to fill in the vacuum (ahem) in their early knowledge gaps and I think that particular comparison review post is doing those people a disservice in many cases.

…a case of a little knowledge being harmful, more knowledge being more harmful…until perspective is achieved by memory of error and $$$…

 

[whirlwind]

Thought I would change things up a bit and this evening rolled in a Valvo G4004 rectifier, keeping the four TS 6BX7 and a pair of NU Type 76. It sounds really good, but then those of us with GOTLs know that almost everything sounds good in a Glenn.

Those Tung Sol's are pretty, besides sounding really nice.

 

[gibosi]

Yeah, the Tung-Sols put on a nice light show. And tapping the "night sight" button on my camera phone adds a little magic to the picture.

 

[mordy]

More night sights in blue:

Just picked this picture because it is pretty...