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Little Dot MKIII Tube Rolling - Page 125

post #1861 of 2867
I head that the civilian brand of the M8161 that Yen sells is very similar to the military spec with the large shield on them.
I have a pair of Sylvania 6ak5 with round getters and black plates if anyone is interested. They were bought matched and tested by Yen.
Check my sig for the ad.
post #1862 of 2867

Items for sale.

*double post*
post #1863 of 2867
I have both the Mullard M8161 and the CV131 civilian version, I'd say they sound pretty much the same they certainly have the same construction.
post #1864 of 2867

Tubes Coming!

I'm pretty excited for the driver tubes I've got coming:

Amperex EF92 6CQ6
Mullard EF91 Mil Specs

From what I've gathered from this thread, it sounds like the EF91s are really similar to the EF92s, which are more tubey, open, and have better bass than most EF95 tubes (I'm currently using the Voshod EF95 6ZH1P-EVs. I like them, but they tend to make it sound more SS, IMO (too crisp for my liking), even though my source is a tube CD player).

What are people's thoughts on the Amperex EF92? I know they are super rare to come by now, so I'm incredibly pleased with myself in finding some
Would anyone here care to comment on them?

I'll be sure to post reviews of them, comparing all three, as soon as I get them burned in. I'm not looking forward to switching jumpers each time I go between EF91/EF92 to EF95, though
post #1865 of 2867
I found the Russian 6Zh1P-EV somewhat disappointing, muffled, like someone put a blanket over the music, the stock ones have greater extension but less full in the mids and the bass is looser.

I'm thinking what should I try next, I would like the mids and bass like the Russian tubes but with greater treble extension and detail. What do you all recommend?

Thanks,

Donny
post #1866 of 2867
Sorry about the double post!
post #1867 of 2867
Quote:
Originally Posted by Donnyhifi View Post
I found the Russian 6Zh1P-EV somewhat disappointing, muffled, like someone put a blanket over the music, the stock ones have greater extension but less full in the mids and the bass is looser.
Strange, I wouldn't characterize them like this at all. They are well extended at both ends - maybe not as tubey in the midrange. Very good, well rounded tube.

Do you have the ones made at Vishod plant with the ridges in the glass?
post #1868 of 2867
Quote:
Originally Posted by Donnyhifi View Post
I found the Russian 6Zh1P-EV somewhat disappointing, muffled, like someone put a blanket over the music, the stock ones have greater extension but less full in the mids and the bass is looser.

I'm thinking what should I try next, I would like the mids and bass like the Russian tubes but with greater treble extension and detail. What do you all recommend?

Thanks,

Donny
Who did you get the 6ZH1P-EV from? The Russian tubes vary a lot by manufacturer and year, you would want to make sure that the russian tubes you get are the right ones. I have a few unmatched tubes from random sellers on ebay and they don't sound nearly a good as the pair I got from Yen Audio.

- DoA
post #1869 of 2867
semi-offtopic: has anyone tried a LDMKIII with a DT880/600 or DT770/600?
post #1870 of 2867
Not sure where they came from to be honest. I bought the Amp on the forums and the tubes were thrown into the package. The previous owner also got them with the amp when he picked it up, not sure about how they were acquired and I have a feeling they aren't matched and possibly faulty then. I'm thinking of trying something some new from the store here
post #1871 of 2867
Quote:
Originally Posted by Donnyhifi View Post
Not sure where they came from to be honest. I bought the Amp on the forums and the tubes were thrown into the package. The previous owner also got them with the amp when he picked it up, not sure about how they were acquired and I have a feeling they aren't matched and possibly faulty then. I'm thinking of trying something some new from the store here
Try the Yen Audio store:

eBay Store - Yen Audio: Little Dot, 6ak5, Little Dot headphone amp

- DoA
post #1872 of 2867
Quote:
Originally Posted by Donnyhifi View Post
Not sure where they came from to be honest. I bought the Amp on the forums and the tubes were thrown into the package. The previous owner also got them with the amp when he picked it up, not sure about how they were acquired and I have a feeling they aren't matched and possibly faulty then. I'm thinking of trying something some new from the store here
What does the writing on the glass say? Does the outer glass have ridges?
post #1873 of 2867
At work atm, definitely has the ridges though the dates are way off, one was dated 83 and the other was dated 88. I had another pair which the amp came with but one was written in silver and one was gold. Most of the writing was worn off so I was uncomfortable trying this pair but after trying it yesterday for the first time and it sounded more airy with much better treble extension, they also sound better than the stock GE ones accross the board. I may have upgraditis so I will look into the tubes that are talked about in this thread, thanks guys for your help!
post #1874 of 2867
I have a bunch of unmatched tubes. Maybe I have tin ears but I don't really hear any problems with the unmatched tubes I've tried. I do have a few "premium" matched pairs to compare to. The difference between tubes has more to do with the build than the matching.

I think there may be too much emphasis placed on matched pairs, especially when I was able to get some pretty decent tubes - 403B comes to mind - at cheap prices when not matched.
post #1875 of 2867
Quote:
Originally Posted by erikzen View Post
I have a bunch of unmatched tubes. Maybe I have tin ears but I don't really hear any problems with the unmatched tubes I've tried. I do have a few "premium" matched pairs to compare to. The difference between tubes has more to do with the build than the matching.

I think there may be too much emphasis placed on matched pairs, especially when I was able to get some pretty decent tubes - 403B comes to mind - at cheap prices when not matched.

I do have to agree with you. And I'm curious on why Yen doesn't state the results of his testing and matching the tubes.. Tubes can be matched and be on the low end of "good" or be in the "strong" end. Most of the tubes I buy on Ebay that are tested have the actual results stated and written on the boxes. And the testing and matching shouldn't be that expensive. For instance TubeDepot charges nothing to test the tubes and $2 per tube to match them. Alot of sellers test their tubes to cull out the shorts and test emissions anyways so its not alot more trouble to write down the results and match them. While I am certain that Yen provides a good service for those unwilling to look for deals on eBay, he does charge a very high premium for said services.
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