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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 260

post #3886 of 10502

Does anyone know where I can buy a pair of socket adapters for the little dot 1+ for my Sylvania 6AQ6s? 

 

I've seen 7,8, and 9 pin adapters all over ebay, but I really don't know which ones to purchase. 


Edited by Sony Slave - 11/9/13 at 8:18pm
post #3887 of 10502

Well just checked on those tung sol 6SU7GTY  holy moly were far from our$4.00 tubes but there so nice thats why i like the littledot MK9 with those big tubes and they are cheap 6080 /6AS7GA power tubes go from $10.00 each and theres tons of them

post #3888 of 10502

For the little dot 1+ which of these would you recommend for jazz with the HE-500 phones:

Voshkod 6ZH1P-EV

MULLARD CV4014 / 6064 / M8083 / EF91 TUBES - SQUARE GETTER - RARE - MILSPEC #2

Mullard Gt Britain EF92 CV131 6CQ6 W77

Mullard M8161 / CV4015 tube, Horseshoe-getter

 

The Voshkod is my favorite for my tube dac over the Amperex white label, Bugle Boy and Telefunken 

 

Any comments on proposed setup appreciated if I should consider othe options?????


Edited by SwanSong - 11/9/13 at 8:40pm
post #3889 of 10502

Hi Gibosi,

 

Thanks for your tip on the adapter for octal tubes - ordered one.

 

While I wait for it to arrive I will have time to shop for 6SL7 tubes. I notice that Little Dot MK9 uses a 6N9P as a driver (I assume that it is Chinese made) which apparently is a 6SL7 equivalent.

 

The are Russian tubes as well, 6H9C and 6N9S. Do you have any knowledge of Chinese and Russian 6SL7 type tubes?

 

Also came across a huge list of Russian tube factories by location and symbols. Google translate will help in translating this list or individual entries on the list.

 

 

http://istok2.com/factories/

post #3890 of 10502
Quote:
Originally Posted by TrollDragon View Post

Is the 6SL7GT a good driver to start with?

Look no further, this is the one to start with!

http://diy-tubes.com/6n9s-6sl7-nos-nib.html

 

Remember to change your powertubes to 6N8S too to get perfect match. ;)

 

I personally think that even these 80's 6N9S tubes must be better than mediocre 6SL7GT.

http://kuvaton.com/k/YNkj.jpg


Edited by Artsi - 11/9/13 at 9:50pm
post #3891 of 10502
Quote:
Originally Posted by Sony Slave View Post
 

Does anyone know where I can buy a pair of socket adapters for the little dot 1+ for my Sylvania 6AQ6s? 

 

I've seen 7,8, and 9 pin adapters all over ebay, but I really don't know which ones to purchase. 

Why do you need adapter, what for?! Look help from here:

http://www.head-fi.org/t/563884/little-dot-tube-amps-vacuum-tube-rolling-guide/1140#post_9392055

 

Cut pins 5&6 and put your amp to EF91/92 state.

post #3892 of 10502
Quote:
Originally Posted by Sony Slave View Post
 

Does anyone know where I can buy a pair of socket adapters for the little dot 1+ for my Sylvania 6AQ6s? 

 

I've seen 7,8, and 9 pin adapters all over ebay, but I really don't know which ones to purchase. 

 

The 6AQ6 is a Double Diode-Triode. I have no idea how to use this tube in a Little Dot..... 

 

Edit:  Oh... 6AQ6, 6AT6 and 6AV6.... It is late...  I am not thinking clearly.. lol... I need to sleep... but yes, just cut off pins 5 and 6 and use the EF92 setting and you are good to go... cheers!


Edited by gibosi - 11/9/13 at 9:41pm
post #3893 of 10502

Here is the finished "Tower of Power" as MIKELAP calls it, just some spit, steel wool and polish left to do. I decided to use an octal socket so an octal tube could be plugged in or B9A tubes could be used with a 8 Pin plug and 9 pin socket.

 

Sorry @mordy I won't be building any more of these as the functionality of this one is a little fiddly to get lined up and plugged in and I would not feel good sending it to you or anyone else.

So let the Games Begin!

 

 

Installed with lights on then off.

 

 

Well that is the Tower of Power... Now i just need one of those CCCP 6H9C from Reflektor Plant that @Artsi linked, I'll have to pass on the power tubes till I can figure out a way to adapt them. Thanks Artsi!

 

I played Opeth's "Blackwater Park" and "Watershed" while composing this to test the adapter and I still find the treble too sharp on the ECC85.

Watershed has some great acoustic work, will be nice to hear it through a good tube!

:beerchug:

post #3894 of 10502
 

 

Well that is the Tower of Power... Now i just need one of those CCCP 6H9C from Reflektor Plant that @Artsi linked, I'll have to pass on the power tubes till I can figure out a way to adapt them. Thanks Artsi!

 

I have one extra 6N9S, but sending it to usa costs at least 7.5EUR and is slow. You can get those cheap tubes from usa easier and faster. For powertubes you could make straight coppertube-adapter separately for both channels. It should be easier than with those angled pipes. I think you know how wires have to be connected from B9A to Octal?

post #3895 of 10502
Quote:
Originally Posted by gibosi View Post
 

 

The 6AQ6 is a Double Diode-Triode. I have no idea how to use this tube in a Little Dot..... 

 

Edit:  Oh... 6AQ6, 6AT6 and 6AV6.... It is late...  I am not thinking clearly.. lol... I need to sleep... but yes, just cut off pins 5 and 6 and use the EF92 setting and you are good to go... cheers!

Oh ok, thanks! Will do.

post #3896 of 10502

Is this a good deal for the Orange Globe tubes, or is this too good to be true? A potential rip off?

 

http://www.ebay.com/itm/Pair-Holland-Amperex-Orange-Globe-6DJ8-ECC88-tubes-Tested-76-71-72-76-/181228837147

post #3897 of 10502
Quote:
Originally Posted by Audiofanboy View Post
 

 

Thank you gibosi! Please keep claiming the superiority of 6DJ8 tubes ......

Hey Audiofanboy, what do I need to do, in order to run the 6DJ8 tubes correctly for the little dot 1+.

post #3898 of 10502
Quote:
Originally Posted by Artsi View Post

I have one extra 6N9S, but sending it to usa costs at least 7.5EUR and is slow. You can get those cheap tubes from usa easier and faster. For powertubes you could make straight coppertube-adapter separately for both channels. It should be easier than with those angled pipes. I think you know how wires have to be connected from B9A to Octal?
Thanks much for the offer Artsi but I will probably grab them from the site you listed when I get some spare cash. Yes the curved pipes are a PiTA to work with and straight up from a B9A to Octal socket will be a piece of cake! Your MK II make rigging this stuff so much easier with nothing in the way of the sockets. Much Fun to be had for sure, glad I didn't pick up a Schiit amp as I would be chased out of town hanging pipe from it. biggrin.gif
post #3899 of 10502
Quote:
Originally Posted by Sony Slave View Post
 

Is this a good deal for the Orange Globe tubes, or is this too good to be true? A potential rip off?

 

http://www.ebay.com/itm/Pair-Holland-Amperex-Orange-Globe-6DJ8-ECC88-tubes-Tested-76-71-72-76-/181228837147

 

It's not a bad deal. However, notice the tested numbers in the heading:

 

"Pair Holland Amperex Orange Globe 6DJ8 ECC88 tubes (Tested @ 76/71, 72/76)"

 

A new tube should test at about 100. Anything less than 50 is shaky. So one could say that these tubes have about half of their useful life left, and if you use them regularly, you might have to get a new pair in a year or so....

 

Also, these do not have a halo getter. They have a solid dimpled getter. Generally, the earlier halo getters are considered the best. But still, for $30, I think they would be very nice "starter tubes."

post #3900 of 10502

5751/12AX7

 

First, I want to point you to Joe's Tube Lore:

 

http://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html

 

I have found his observations regarding 12AX7 and 6DJ8 to be largely spot on.

 

So, I took his advice and bought a few 5751, which are premium versions of the 12AX7.

 

Tung-Sol

 

 

As Joe points out, this is a very nice tube, but it isn't as focused as the others. Instrument location is harder to discern.  It lacks the etched 3-D holographic presentation of the GE and Sylvania.

 

~~~~~~~~~~~~~~~~~~

GE Black Plate

 

 

This is probably the best buy: Transparent, micro details and a 3-D stage. This tube is equal to a good 6DJ8. However, the Sylvania is better. :)

 

~~~~~~~~~~~~~~~~~~~~

Sylvania Black Plate

 

 

As Joe points out, mid range - especially female vocals - are to die for, along with transparency, micro details, 3-D stage, black-black quiet, it has it all. And frankly, the mid range on this tube is superior to my US-Amperex 6922. Of course, I'm still on my honeymoon with this tube lol. After more listening, I may well change my mind, but currently this is my favorite tube.

 

And boy did I get lucky! I bought this one for $25. While nowhere near as expensive as the premium 6DJ8s, a single tube typically goes for a minimum of $60. As the lettering and graphics are completely gone, I suspect that many would-be buyers were skeptical that it really was a Sylvania. These and the GE black plates look extremely similar, except for some detailed metal work below the third mica. However, for me, the letter "E" below 5751 was the key. I remember seeing this pair below on eBay, so I did not hesitate. :)

 

$(KGrHqJHJEEFJcHm84R2BSeTzh0Q(!~~60_57.JPG 

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