[dobigstuff]

Has anyone saw one of these Tung-sol 421A before?

zeroduke:

This is the only NOS 421A I would get (if you can find them) See Below:

 

[attmci]

Has anyone saw one of these Tung-sol 421A before? I didn't know of their existence... and still have doubt about it.
Offered at eBay by "bangybangtubes", which seems to be a new name from OldGuyRadiola!

https://www.ebay.com/itm/MEGA-RARE-NOS-PAIR-421-A-TUNGSOL-421A-VINTAGE-POWER-TUBES-5998-6080WB-7236-USA/273081362008?

No, they are fake.

See the discussion a couple of pages before.

 

[attmci]

zeroduke:

This is the only NOS 421A I would get (if you can find them) See Below:

Agreed. The NIB can be found very cheap. Sometimes.

 

[mordy]

It is interesting to note that UT suggested that you could use the Cetron 6336B instead of the 5998 at a much lower price, but only if your amp can handle 5A tubes.
The 6336 is basically a double 5998.

 

[michaelgjw]

need help identifying this tube. no brand on the band, and double halo getter on the top. any input is appreciated. thanks.

 

[gibosi]

need help identifying this tube. no brand on the band, and double halo getter on the top. any input is appreciated. thanks.

Sylvania.

 

[michaelgjw]

Sylvania.

Thanks for the info.

 

[Quadfather]

My amp is a Bottlehead Crack with the Speedball upgrade. I am running an RCA 6080 and an RCA 12AU7A with HD650s. Sounds "okay." Just ordered Tung Sol 5998 and Mullard CV4003. I hope this gives me the improvement I'm looking for.

 

[abvolt]

The tubes you ordered will make a world of difference in sq..enjoy

 

[Quadfather]

The tubes you ordered will make a world of difference in sq..enjoy

I am so excited. Toyed with selling the amp, but decided to try better tubes. This hobby gets my as excited as a kid on Christmas morning!!!

 

[abvolt]

The 5998's never come out of my wa22, when I owned a wa7/tp the same held true with the mullard cv4003's simply the best sounding..

 

[LouisArmstrong]

Nice. Really nice.

 

[Quadfather]

The 5998's never come out of my wa22, when I owned a wa7/tp the same held true with the mullard cv4003's simply the best sounding..

They have not arrived yet in the mail, but I am so stoked!

 

[abvolt]

Be sure and let us know how well you enjoy them..

 

[Quadfather]

I have not yet received the Tung Sol 5998. However, I received the Mullard CV4003. Currently I am running it with an RCA 6080 power tube. I really love the fact that this tube has made the treble and cymbals sound much more realistic and clear. That is the first thing I notice.