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post #586 of 1494
Quote:
Originally Posted by hodgjy View Post

I have also recently discovered the Sylvania 5998A in my WA3.  It's basically a Sylvania 7236 in a different bottle and without the computer rating.  But, it sounds slightly different to my ears.  I like it.

 

My tube guy gave me a NOS GE 5998a for free, haven't tried it yet. Now I think I'll give it a try

post #587 of 1494

Every GE 5998A I have seen looks like a 6AS7GA, not a 7236.

post #588 of 1494
Damn smily_headphones1.gif
I'll check
post #589 of 1494
In reference to the TS 7236, that's what I've seen too. The GE brown base, Sylvania, and their JAN variants of 5998A all look somewhat similar to the Sylvania 7236 and 6AS7GA. The GE have perfectly flat plates and Sylvanias have a crease down the center. However, they all sound most like the Sylvania 7236 and nothing like the 6AS7GA. None look like the TS7236 with box plates. I've also noticed the non JAN to be pretty microphonic and the JAN pretty immune to physical vibration.
Quote:
Originally Posted by Skylab View Post

Every GE 5998A I have seen looks like a 6AS7GA, not a 7236.
post #590 of 1494
The Amperex 7802s arrived today, pretty interesting tube. Construction is similar to the JAN Chatham 6080WA with the extra supports and metal clips for the micas. It's very 7236 like in presentation, with a lot of detail.  basshead.gif

Edited by GrindingThud - 3/16/13 at 1:39pm
post #591 of 1494

Not just similar but suspiciously identical to I would say.  The Chatham 6080W is a neat looking tube.

post #592 of 1494
Quote:
Originally Posted by hodgjy View Post

The tubes in bold below are the same tube.  The 7236 is computer rated, whereas the the 5998A is not.

 

If you want the best bass, you'll want the TS 7236 (or TS 5998A).  The Sylvania 7236 is also good at bass.  If you can find a Sylvania 5998A, that is the same tube as their 7236, but in a different bottle, and also has great bass.

 

Keep in mind, that only TS and Sylvania have "good" 5998A tubes.  The other ones, like IBM and GE, are completely different and aren't very good.

 

 

Are the TS / Sylvania 5998A high up there together with the TS5998 ? Very little differences? 

Also what does that mean by computer rated?


Edited by snip3r77 - 3/23/13 at 9:46am
post #593 of 1494

 Computer rated means that the tubes can handle long idle periods without much cathode "poisoning"as I understand it and long life.

post #594 of 1494

Did you know that the term debugging was first used to describe the process of removing large insects that were crawling around in the large early tube computers that will short or arc over the tube pins? eek.gif

post #595 of 1494

Is it strange that I prefer the Sylvania 6080GB over the TS5998? The 5998 has much better detail, way larger soundstage and better instrument separation but the 6080GB just has that x factor for me, it's like the artist is performing in front of me pouring his heart out.
 

post #596 of 1494
Quote:
Originally Posted by m17xr2b View Post

Is it strange that I prefer the Sylvania 6080GB over the TS5998? The 5998 has much better detail, way larger soundstage and better instrument separation but the 6080GB just has that x factor for me, it's like the artist is performing in front of me pouring his heart out.
 

 

 

It's not strange at all.

Different people have different preferences.

The way tubes sound depends on the circuit/amp design and system synergy.

post #597 of 1494

I bought some RCA 6080 on a whim from fleeBay for next to nothing and I absolutely love those. I very slightly preferred the TS5998 but I paid 10 times more for those. frown.gif

post #598 of 1494

My Crack came stock with a RCA 6080, it's actually pretty good. I think I prefer it to the RCA 6AS7G that I have. I have a TS5998 coming in on Friday so we'll see how they hold up.

 

There was a listing on fleebay for ten assorted 6AS7G's and one TS5998 for around $95 BIN. Hesitated for a bit because the seller didn't list any test values, and then it disappeared triportsad.gif. Would have been fun rolling those tubes to see the differences.

post #599 of 1494

The RCA I got and I can recommends without hesitations are those ones:

 

 

Processed By eBay with ImageMagick, R1.1.1.M1

post #600 of 1494

I think that's a 6080WA, not sure the difference from the plain 6080

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