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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 688

post #10306 of 10317

I have not heard of too many cases that you can run a tube till it "ends"!

Yes!  Tubes have a life span, but it does not usually mean they will stop working.  They just deteriorate in sound quality (become less dynamic compared to a healthy tube!) very gradually.

Most of us have at least a few sets of tubes to roll, and from my (limited) experience with my audiophile friends, this never happens!

We will find a new favorite set before the tubes get to much used.

post #10307 of 10317
Ah, i was thinking lol theyll just stop working. The only interaction i had with tubes was as a kid. I would collect them from junk tv's and radios primarily because they looked cool. Which being a 5 year old, meant they were eventually taped to wings of toy planes as either missiles, laser cannons or were used as mystical gems for some dumb role play game we were playing. 😂
post #10308 of 10317
Just got the mk2 amp in wow, and on just the tubes that came with it(not sure what tubes they are) but they sound good. My Sansui SS50 never sounded so alive. How long is the burn in before they get really good?
post #10309 of 10317
Quote:
Originally Posted by droido256 View Post

Just got the mk2 amp in wow, and on just the tubes that came with it(not sure what tubes they are) but they sound good. My Sansui SS50 never sounded so alive. How long is the burn in before they get really good?

Glad you like it, it is a great little amp. Just wait till you try other tubes. I never count the burn in hours as I'm always too busy enjoying my music

post #10310 of 10317

I think burn-in should take about 20 - 100 hours depending on tubes, but practically all my tubes sound good from the start and even my less fav tubes, Siemens and Voshkhods (no rocket logo) improve with time.

 

Currently I have 7 pairs of EF95 tubes to run with my I+. So it'll take dozens of years for them to run out. That, unless I find a pre-amp that uses EF95 too.

post #10311 of 10317
Quote:
Originally Posted by gibosi View Post
 

 

I am quite sure that when these were manufactured they had rhodium pins. And it is important to remember that the plating on the pins, whether gold or rhodium, has absolutely no affect on the sound. These platings were applied because they are resistant to corrosion, and never having to clean pins is a very good thing.

 

However, there is something about gold pins that causes people to go a little crazy... lol. And while I have no proof, I believe that when you see Voskhods with gold pins, that plating was not done at the factory. Likely, it was done sometime after production, perhaps many years after, And very likely it was done in order to justify a higher selling price to audiophiles, such as those in this forum. lol.

 

Regardless, Voskhod 6ZH1P with gold pins are not worth the extra cost. I consider them to be a novelty and a collectors item. If you are simply looking for a pair of Voskhods for your amp go for the inexpensive ones with rhodium pins.

 

And what do you guys think about these ones from 1979? For some reason the stamps on the boxes look too new... 

 

http://www.ebay.com/itm/6J1P-EV-6ak5-EF95-USSR-1979-Lot-of-4-pcs-/172091890525?hash=item281179db5d:g:OjcAAOSwnLdWtmOg

 

Thanks once more :)

post #10312 of 10317
Quote:
Originally Posted by IvoTaze View Post
 

 

And what do you guys think about these ones from 1979? For some reason the stamps on the boxes look too new... 

 

http://www.ebay.com/itm/6J1P-EV-6ak5-EF95-USSR-1979-Lot-of-4-pcs-/172091890525?hash=item281179db5d:g:OjcAAOSwnLdWtmOg

 

Thanks once more :)

 

It really depends on how they have been stored. If there were stored in a temperature and humidity-controlled environment all these years, the boxes would still look new. I have some boxes from the 1940's that look and feel new.

post #10313 of 10317
Wow, the Raytheon CK5654 sound wonderful!
post #10314 of 10317
Decided to pull the trigger on a 4x set of GE's ....... I think i have succumbed to valve sickness 😂 4 GE's, 10 Voshkods, 7 Raytheons.

Excuse me, I have to comfort my crying wallet.

Nevermind, the wallet has burnt to a crisp.
post #10315 of 10317
Quote:
Originally Posted by droido256 View Post

Decided to pull the trigger on a 4x set of GE's ....... I think i have succumbed to valve sickness 😂 4 GE's, 10 Voshkods, 7 Raytheons.

Excuse me, I have to comfort my crying wallet.

Nevermind, the wallet has burnt to a crisp.

yep you will soon have a drawer or box full of tubes

post #10316 of 10317
Quote:
Originally Posted by HungryPanda View Post
 

yep you will soon have a drawer or box full of tubes

 

............ like most of us!  Haha~!

post #10317 of 10317
Besides the 5654 are there any other Ratheon tubes that work with the mk2 amp? Including power tubes? I really like the Raytheon "sound".

Meanwhile my wallet is going no! No!
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