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Review of the Little-Dot MKII Tube Headphone Amp/Pre-Amp - Page 21

post #301 of 438
12/28/08 at 2:19pm
Does anyone know of a US-based source for replacement 6N6 and 6J1 tubes? I just got a Little Dot MkII and absolutely love it. I'm not interested in doing any serious tube rolling at this time, but I would like to replace the stock Chinese tubes with some Russian military-grade tubes if possible. I don't really want to wait two weeks or more for tubes to be shipped from Russia and would also like to save on shipping costs.

If anyone has any ideas (or extra tubes), please let me know. Thanks!
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post #302 of 438
12/28/08 at 5:23pm
There are no US equivalents to the 6N6 however the 6J1 is easily replaced by the American 6AK5.
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post #303 of 438
12/28/08 at 5:48pm
Thanks. Actually, I was wondering if there are any US-based merchants who sell Russian 6N6-P tubes. I know that there is unfortunately no domestic equivalent of that tube.
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post #304 of 438
12/28/08 at 5:55pm
Yes but you're going to pay for it...

USA Vendor

Ukrainian dealer


Note the price difference versus the quantity you receive.

I've generally received packages from Russia or the Ukraine in roughly 10-12 days. Patience is a virtue.
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post #305 of 438
12/28/08 at 6:12pm
Quote:
Originally Posted by 928GTS View Post
Yes but you're going to pay for it...

USA Vendor

Ukrainian dealer


Note the price difference versus the quantity you receive.

I've generally received packages from Russia or the Ukraine in roughly 10-12 days. Patience is a virtue.
Yow, you're not kidding!

I guess 10-12 days isn't so bad after all.
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post #306 of 438
12/28/08 at 6:17pm
Do keep that in mind though that it' important for the power tubes to be matched in order to have a proper presentation of the soundstage, not to mention the longevity of the amp. Matching the 4 sections (there are 2 sections in each tube) is a rather labor intensive process. My opinion is that you get what you pay for.
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post #307 of 438
12/28/08 at 7:02pm
Quote:
Originally Posted by Dept_of_Alchemy View Post
Do keep that in mind though that it' important for the power tubes to be matched in order to have a proper presentation of the soundstage, not to mention the longevity of the amp. Matching the 4 sections (there are 2 sections in each tube) is a rather labor intensive process. My opinion is that you get what you pay for.
I've bought tubes from Russian & Bulgarian dealers quite often and I've never had a problem with mismatched tubes. The tubes I've acquired from said dealers sound great in my amplifiers.
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post #308 of 438
12/28/08 at 7:04pm
Quote:
Originally Posted by Dept_of_Alchemy View Post
Do keep that in mind though that it' important for the power tubes to be matched in order to have a proper presentation of the soundstage, not to mention the longevity of the amp. Matching the 4 sections (there are 2 sections in each tube) is a rather labor intensive process. My opinion is that you get what you pay for.
Thanks very much for the feedback. The only odd thing I've noticed about the 6N6 tubes on my LDMkII is that one of them glows a bit brighter than the other (at the very top), though the channels seem to be of equal strength. Is this cause for concern?

Sorry for all of the questions. It's been several years since I've messed with tubes.
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post #309 of 438
12/28/08 at 7:49pm
Its no big deal,if you're really worried take a temp gun to it and see if the temperatures are drastically off. If thats the case that tube might be drawing more current than the other,if the brightness difference isn't massive it isn't anything to worry about.
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post #310 of 438
5/14/09 at 1:17pm
I was wondering if the gain settings affect the volume only or does it also affect sound quality? Wondering what Jumper setting is best for Audio Technicas (32 to 40 ohms). If the gain is higher, does the sound become brighter? Wonder if anyone has experience comparing the sound with different gain settings
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post #311 of 438
5/14/09 at 1:38pm
This is really a question only you will be able to answer. Its so easy to change the gain and find out yourself. The key here is that YOU can change the gain. I would be concerned if you were getting an amp without various gain settings. With the LDs the 3 settings should be enough to satify just about any Source/Headphone combo out there. Don't be afraid to experiment.
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post #312 of 438
5/14/09 at 1:42pm
hehehe thanks. just itching for my amp already since I dont have it yet. Just wanted some advance info
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post #313 of 438
5/23/09 at 9:17am
wonder if anyone has a burned in stock ld mk2 and compared it with other amps under 500 dollars

still anxiously waiting for my amp
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post #314 of 438
6/13/09 at 11:04pm

The Glow



While i keep picking up various driver tubes right now, out of the Stock tubes, 6ZH1P-EV and (small shield) M8161, the stock tubes still have the nicest glow, so for photo ops, they go back in

I am still not sureon the 6H30Pi-EH question: Sovtek or Electro-Harmonix?

If someone could help me flip a coin on the power tubes, i'd appreciate it.
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post #315 of 438
7/18/09 at 7:47am
My little dot mk2 is on the way now. I will use it with my beyerdynamic dt880 250ohm. This is my first tube amp. So what will I have to carefull about that? Any danger about heat?
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