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Little Dot MKIII Tube Rolling - Page 8

post #106 of 2785
2/3/08 at 8:12pm
Quote:
Originally Posted by Tech2 View Post
Too late, they're gone.

I didn't figure they would last long at that price. It's almost robbery.
Hopefully it is one of US, and they'll sell them cheap.
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post #107 of 2785
2/3/08 at 8:24pm
Quote:
Originally Posted by Penchum View Post
Hopefully it is one of US, and they'll sell them cheap.
Works for me

Bought by a brand new ebayer. Only other purchase was for some 6AK5's. You know what he's feeding.
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post #108 of 2785
2/3/08 at 8:28pm
Quote:
Originally Posted by Tech2 View Post
Works for me

Bought by a brand new ebayer. Only other purchase was for some 6AK5's. You know what he's feeding.
Time for them to fess up, let the cat out of the bag, show yourself, hungry tube eaters are waiting!!!!
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post #109 of 2785
2/4/08 at 1:03am
Thread Starter 
I received a matched pair of Amperex 5654 EF 95 tubes last week and have about 30 or so hours of burn in on them.

These are my favorite tubes so far in my rolling journey! IMO, when you get to high quality tubes it all boils down to personal preference as the differences are minimal. The GE 5 Stars are fantastic but these seem to me to be slightly more detailed over the entire frequency range.

Both are fantastic tubes!

I have some Mullard 403B's and some National 403B's which I haven't listened to yet.

Seems to me it's very difficult to say which is better because they all bring something different to the table!

And I guess that's the beauty of tube rolling!
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post #110 of 2785
2/4/08 at 1:24am
Quote:
Originally Posted by RogerB View Post
I received a matched pair of Amperex 5654 EF 95 tubes last week and have about 30 or so hours of burn in on them.

These are my favorite tubes so far in my rolling journey! IMO, when you get to high quality tubes it all boils down to personal preference as the differences are minimal. The GE 5 Stars are fantastic but these seem to me to be slightly more detailed over the entire frequency range.

Both are fantastic tubes!

I have some Mullard 403B's and some National 403B's which I haven't listened to yet.

Seems to me it's very difficult to say which is better because they all bring something different to the table!

And I guess that's the beauty of tube rolling!
Yeah, the Amperex are a tasty treat! I'll be interested in some feedback outside the EF95 family where differences might be less subtle.
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post #111 of 2785
2/4/08 at 1:56am
Quote:
Originally Posted by RogerB View Post
I received a matched pair of Amperex 5654 EF 95 tubes last week and have about 30 or so hours of burn in on them.

These are my favorite tubes so far in my rolling journey! IMO, when you get to high quality tubes it all boils down to personal preference as the differences are minimal. The GE 5 Stars are fantastic but these seem to me to be slightly more detailed over the entire frequency range.

Both are fantastic tubes!

I have some Mullard 403B's and some National 403B's which I haven't listened to yet.

Seems to me it's very difficult to say which is better because they all bring something different to the table!

And I guess that's the beauty of tube rolling!
Lucky. Nice tubes.

Remember to burn them in before passing judgement on them especially if you got them NOS, unlike cables and even amps, tubes were DESIGNED so that they require some burn in to create a harder vacuum inside the tube.
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post #112 of 2785
2/4/08 at 4:13am
Thread Starter 
DofA, all the tubes i've mentioned are NOS. How much burn in do you recommend for these tubes before they reach their potential??
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post #113 of 2785
2/4/08 at 6:26am
Just to make sure. Can the MK3 run 5687 power tubes? Info so far indicates that 6H6NPI=E182CC=5687 From various Ebay sellers. Hope its true as there a some excellent tubes at the moment.
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post #114 of 2785
2/4/08 at 6:37am
Quote:
Originally Posted by headcheck View Post
Just to make sure. Can the MK3 run 5687 power tubes? Info so far indicates that 6H6NPI=E182CC=5687 From various Ebay sellers. Hope its true as there a some excellent tubes at the moment.
Sorry, no. The Russian sellers started this problem. They were trying to say "sounds like E182CC" and it is all blown out of truth now. If I take a 6H6N and put it in my MKIVse (which uses 5687, E182CC, others) it will not work. They are not pin compatible. If I take one of my 5687's and put them in the MKII, it will not work. Same pin compatibility issue. MKII + MKIII must stay 6H6N compatible.

I ran into this whole mess while researching for the MKII review. I coordinated with DavidZ and Sword, they both told me about the problem.
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post #115 of 2785
2/4/08 at 7:07am
Quote:
Originally Posted by Penchum View Post
Sorry, no. The Russian sellers started this problem. They were trying to say "sounds like E182CC" and it is all blown out of truth now. If I take a 6H6N and put it in my MKIVse (which uses 5687, E182CC, others) it will not work. They are not pin compatible. If I take one of my 5687's and put them in the MKII, it will not work. Same pin compatibility issue. MKII + MKIII must stay 6H6N compatible.

I ran into this whole mess while researching for the MKII review. I coordinated with DavidZ and Sword, they both told me about the problem.
Great! I can keep that trigger happy finger of mine away for the buy now button. Thanks for saving me some money!!
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post #116 of 2785
2/4/08 at 7:34am
WTF. Now I'm really scratching my head. Even so call trusty yen1233 has this on one of his previous tube. "Joint Army-Navy (JAN) 5687 vacuum tubes compatible as upgrade tubes for the 6H6Pi and 6N6 on Little Dot's MkII / MkIII / MkIV and some MkIVse headphone amplifiers*." That finger is starting to get itchy again.

JAN Mil-Spec 5687 Power Tube Little Dot Mk Amp 6H6P 6N6 - eBay (item 280197543163 end time Feb-03-08 18:02:36 PST)
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post #117 of 2785
2/4/08 at 7:49am
Quote:
Originally Posted by headcheck View Post
WTF. Now I'm really scratching my head. Even so call trusty yen1233 has this on one of his previous tube. "Joint Army-Navy (JAN) 5687 vacuum tubes compatible as upgrade tubes for the 6H6Pi and 6N6 on Little Dot's MkII / MkIII / MkIV and some MkIVse headphone amplifiers*." That finger is starting to get itchy again.

JAN Mil-Spec 5687 Power Tube Little Dot Mk Amp 6H6P 6N6 - eBay (item 280197543163 end time Feb-03-08 18:02:36 PST)
I sent him a note on it Saturday. I expect to hear back from him soon. He has good tubes, but his info lately is wonky.
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post #118 of 2785
2/4/08 at 7:58am
Quote:
Originally Posted by Penchum View Post
I sent him a note on it Saturday. I expect to hear back from him soon. He has good tubes, but his info lately is wonky.
You really are like that rational little angel perched on my right shoulder

Too bad for the person who won that bid thinking its a great little upgrade

Great that he took your advice and pulled the listing off
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post #119 of 2785
2/4/08 at 8:12am
Quote:
Originally Posted by headcheck View Post
You really are like that rational little angel perched on my right shoulder

Too bad for the person who won that bid thinking its a great little upgrade
It just bugs me that some poor smuck is going to get his tubes, slap them in and "ow, my amp must have blown" or something, and it will not cross his mind that the tubes are not compatible because the eBay add said so!

To double verify, which I do often, I took out a prize matched pair of Tung-Sol 5687s and put them in my MKII. NOTHING WORKS!
Later...
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post #120 of 2785
2/4/08 at 8:39am
double post.
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