[attmci]

LMAO., your alright man,

You should buy a cheap 421A, and call it a day.

 

[gibosi]

You should buy a cheap 421A, and call it a day.

"Cheap" ??? Where can I get one, or two??? lol

 

[attmci]

"Cheap" ??? Where can I get one, or two??? lol

Cheaper than 422A......

 

[gibosi]

Cheaper? That's not saying much... lol

In my experience, there is no such thing as a Holy Grail Super Tube that sounds best in every system. The 5998 comes quite close to the 421A. So if you really love that sound, the 421A might be worth chasing after. But very frankly, depending the the rest of the system -- driver, rectifier, headphones, etc. -- some of the other options may actually have better synergy.

 

[JKDJedi]

Cheaper than 422A......

Thanks a lot...I feel like I'm searching for a needle in a haystack right now...

 

[attmci]

Thanks a lot...I feel like I'm searching for a needle in a haystack right now...

Here are some info. for you: https://bottlehead.com/smf/index.php?topic=663.465

 

[JKDJedi]

Here are some info. for you: https://bottlehead.com/smf/index.php?topic=663.465

Nice..so I put in a request to my "buddy" with boxes full of tubes from when he was 9 years old, a Hail Mary for sure.... so we'll see. Almost temped to make the 5 hour drive to his house.

 

[attmci]

"Cheap" ??? Where can I get one, or two??? lol

Ken,

https://www.ebay.com/itm/1-western-...=true&nordt=true&rt=nc&_trksid=p2047675.l2557

https://www.ebay.com/itm/Western-El...83.l44720.c10&nordt=true&rt=nc&orig_cvip=true

Cheap enough?










JK

 

[JKDJedi]

Ken,

https://www.ebay.com/itm/1-western-electric-421A-tube-tested-/401700627130?hash=item5d873922ba:gGsAAOSwkDtcV8u1&nma=true&si=IRUVMrpPU1TezU9tHw1SwmYvKq8%3D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557

https://www.ebay.com/itm/Western-El...83.l44720.c10&nordt=true&rt=nc&orig_cvip=true

Cheap enough?










JK

Sold !

 

[gibosi]

Yes indeed, more than cheap enough. But too late for me.

 

[attmci]

Many websites recommend to use this method to spot micro-phonic tubes. However, this may permanently damage your tube.




This is not a good practice to check tubes either. Sometimes, you may see a few small pieces of loose glass or insulating spacer inside of the tube, but this does not effect the performance.

 

[JKDJedi]

Many websites recommend to use this method to spot micro-phonic tubes. However, this may permanently damage your tube.




This is not a good practice to check tubes either. Sometimes, you may see a few small pieces of loose glass or insulating spacer inside of the tube, but this does not effect the performance.

I use to wear rubber gloves handling these tubes then some dude hands me a box filled with tubes all laying on top of each other to go through ... I guess they are bomb proof!

 

[attmci]

I use to wear rubber gloves handling these tubes then some dude hands me a box filled with tubes all laying on top of each other to go through ... I guess they are bomb proof!

The tubes are more fragile when they are heated.

I believe everyone can easily spot a micro-phonic tube unless you use a dozen same type of tubes in your amp/dac. Then the trick is swap a suspect tube to the same position in the other channel if possible.

 

[attmci]

Have fun if you want to give it a try.

 

[mordy]

Re the Svetlana 6AS7 equivalent, does anybody know if there is a difference between 6N5S and 6N13S/6N13P/6H13C, if any?
Has anybody compared the 6N5S to the others?
According to gibosi, the 6N5S is a military version of the 6N13S, but the specs differ a little.