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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 186

post #2776 of 6832

I want to tell a great thank's to all members of this thread that let me know that exist other tubes different and better then stock, and to all that have helped me and other who did reviews.

 

I can tell that is true, any tube that i have leastened until now is without dubt better :normal_smile :

post #2777 of 6832

These are my Sylvania 5915's 1/7 strapped in the MKIV SE! These are the Televania's iirc? I removed the tube guard screws and swung them around because they get in the way of my tube rolling and also when I'm trying to change the straps.

 

The 6N6P-IR!!!!

The long wait is over my MKIV SE T.T it's really big, my Fostex T50RP as well!

post #2778 of 6832
Quote:
Originally Posted by siles1991 View Post
 

These are my Sylvania 5915's 1/7 strapped in the MKIV SE! These are the Televania's iirc? I removed the tube guard screws and swung them around because they get in the way of my tube rolling and also when I'm trying to change the straps.

 

The 6N6P-IR!!!!

 

The long wait is over my MKIV SE T.T it's really big, my Fostex T50RP as well!

 

Good stuff, siles; nice choice of tubes at any rate! ;)

 

I'm actually back to using my Tele/vanias (R), 1-7 strapped at the moment. Great tubes, for sure, much more mellow and large-soundstaged than the even more recent offerings.

 

I kind of got annoyed at my latest pairs of tubes last night... Basically, none of them sounded right to me at this point (I'll take this chance to mention that I was not intoxicated or otherwise impaired at the time, just a usual business day evening lol); NONE of them! I'm not sure whether some tubes evolved a bit after the burn-in period, or if part of the "magic" wore off, but these tubes just weren't working for me... They haven't been since I came back from vacation actually.

 

The "Haltmens" (R) -Haltron 6BE6 that look like Siemens tubes but should have been made by Toshiba (as people say on Facebook about relationships: "it's complicated"), while very nicely detailed, just lack any sort of warmth, and not just in the midrange. They simply don't allow me to enjoy my music that much, at least non-electronic genres. That's unstrapped mind you.

 

The Belgian M.B.L.E. EH90 are still warm and cozy but probably too much so, and lack the neutrality and absolute detail I seek in good tubes. At least, they're pleasant, but they may or might not quite be over the "best in class" line.

 

The Mullard Blackburn EH90 seemed like they had the most potential in the bunch -and they do, no doubt about that- but again, they just don't give me the same listening pleasure as other tubes... Too dry? Maybe. Too balanced? Not so sure about that. Too detailed? Actually, not that detailed, but more than enough. Basically, the toe-tapping factor just isn't there with these; at least it hasn't been for the last few days I was using them. It might come back to them at a later time, but for now, I need to go "back to basics" as gibosi did with the 6485 and 8425A tubes.

 

(For the last two tubes, my remarks apply both to unstrapped and 1-7 strapped settings; 1-7 setting just being even thinner and less toe-tapping, but having other advantages)

 

So, I went back to my latest "milestone" tube, and that was the Tele/vania -Sylvania- 5915/EH900S. And I'm glad I did, these are still fine tubes -and much more easygoing than the Siemens derivatives above.

 

At first, these 5915 seemed a bit tame compared to the recent tubes, but they are every bit as detailed -and probably more so given that much is spread over a huge yet natural soundstage- and qualitative. Again, that soundstage will make even the most closed headphones sound large and deep without taking intelligibility away. Treble is noticeably softer -in a good way- than the tubes above, mids are finally alive and musical, while bass is OK but not best in class. That was unstrapped mind you. 1-7 strapped, things tighten up quite a bit; enough that some acoustic tracks start sounding thin -the 1-7 curse!- but still nicer for most musical genres as the tubes are made more dynamic. These do have quite a bit less gain than other heptodes; enough that on some applications, I need to go over the 12 o'clock point on the volume pot, which I do not like to do.

 

So yes, if you see where I'm going with this, even the strapped 5915, while easygoing, are still not quite perfect and balanced imho. In fact, I'm starting to realize that none of my recent heptodes sound truly toe-tapping, detailed & balanced; none of them. And that's a bit of pickle, as far as I'm concerned, as I just can't trade musicality for detail or technical specs. The same thing happened -granted tenfold- with most triodes I tested.

 

I may temporarily try and go back to pentodes -dual control or not- if only to remember just what it is I was looking for in terms of sound quality and musicality.

 

Has anyone else had a similar experience with some heptodes, strapped or not? I'm kind of interested now.

post #2779 of 6832
Quote:
Originally Posted by Audiofanboy View Post
 

 

Good stuff, siles; nice choice of tubes at any rate! ;)

 

I'm actually back to using my Tele/vanias (R), 1-7 strapped at the moment. Great tubes, for sure, much more mellow and large-soundstaged than the even more recent offerings.

 

I kind of got annoyed at my latest pairs of tubes last night... Basically, none of them sounded right to me at this point (I'll take this chance to mention that I was not intoxicated or otherwise impaired at the time, just a usual business day evening lol); NONE of them! I'm not sure whether some tubes evolved a bit after the burn-in period, or if part of the "magic" wore off, but these tubes just weren't working for me... They haven't been since I came back from vacation actually.

 

The "Haltmens" (R) -Haltron 6BE6 that look like Siemens tubes but should have been made by Toshiba (as people say on Facebook about relationships: "it's complicated"), while very nicely detailed, just lack any sort of warmth, and not just in the midrange. They simply don't allow me to enjoy my music that much, at least non-electronic genres. That's unstrapped mind you.

 

The Belgian M.B.L.E. EH90 are still warm and cozy but probably too much so, and lack the neutrality and absolute detail I seek in good tubes. At least, they're pleasant, but they may or might not quite be over the "best in class" line.

 

The Mullard Blackburn EH90 seemed like they had the most potential in the bunch -and they do, no doubt about that- but again, they just don't give me the same listening pleasure as other tubes... Too dry? Maybe. Too balanced? Not so sure about that. Too detailed? Actually, not that detailed, but more than enough. Basically, the toe-tapping factor just isn't there with these; at least it hasn't been for the last few days I was using them. It might come back to them at a later time, but for now, I need to go "back to basics" as gibosi did with the 6485 and 8425A tubes.

 

(For the last two tubes, my remarks apply both to unstrapped and 1-7 strapped settings; 1-7 setting just being even thinner and less toe-tapping, but having other advantages)

 

So, I went back to my latest "milestone" tube, and that was the Tele/vania -Sylvania- 5915/EH900S. And I'm glad I did, these are still fine tubes -and much more easygoing than the Siemens derivatives above.

 

At first, these 5915 seemed a bit tame compared to the recent tubes, but they are every bit as detailed -and probably more so given that much is spread over a huge yet natural soundstage- and qualitative. Again, that soundstage will make even the most closed headphones sound large and deep without taking intelligibility away. Treble is noticeably softer -in a good way- than the tubes above, mids are finally alive and musical, while bass is OK but not best in class. That was unstrapped mind you. 1-7 strapped, things tighten up quite a bit; enough that some acoustic tracks start sounding thin -the 1-7 curse!- but still nicer for most musical genres as the tubes are made more dynamic. These do have quite a bit less gain than other heptodes; enough that on some applications, I need to go over the 12 o'clock point on the volume pot, which I do not like to do.

 

So yes, if you see where I'm going with this, even the strapped 5915, while easygoing, are still not quite perfect and balanced imho. In fact, I'm starting to realize that none of my recent heptodes sound truly toe-tapping, detailed & balanced; none of them. And that's a bit of pickle, as far as I'm concerned, as I just can't trade musicality for detail or technical specs. The same thing happened -granted tenfold- with most triodes I tested.

 

I may temporarily try and go back to pentodes -dual control or not- if only to remember just what it is I was looking for in terms of sound quality and musicality.

 

Has anyone else had a similar experience with some heptodes, strapped or not? I'm kind of interested now.

I share the same experience with you on my pair of Valvo E91H, at first they seemed really good when compared to my voskhods which have now a home where they are used more often. At first hearing the Valvo's sounded like a huge improvement and after going from unstrapped to 1/7 to 2/7 I was amazed. But as I listened longer I felt that it was "dry" like your experience. Than I had my lot of 5 TS 6485 which had finally reached! They sounded detailed, alive, musical but lacked something but were by far the best tubes i've heard most definitely.

 

Than shortly came the Tele/vania 5915's, unstrapped I just didn't like it, it was too laid back and didn't have the energy I liked so I decided to strap it to 2/7 and enjoyed the new found energy, but I wondered how it would sound with the 1/7 so quickly changed the strap and now am enjoying the balanced sound. I feel that the 1/7 is the best strap if you wish to fully enjoy the wide soundstage of the Tele/vania 5915's.

 

Currently awaiting for the RCA 6DT6A's which technically should be similar to the current "tube in the spotlight" RCA 6DT6 a.k.a Detox :P 

post #2780 of 6832

Hi AFB,

 

There are days when nothing sounds really good, and other days when the same tubes sound very good. I have also found that after a hiatus of listening, it takes time to get into the groove again.

 

In general, I found that things sound best late at night, maybe because there is less electric and electronic grunge passed through the electric grid.

 

Then you have what I call "the new normal."  What elicited oohs and ahs and WOW! yesterday, becomes the norm now and does not impress as much as in the beginning.

 

So what to do to bring back the excitement and enjoyment? Play a really well recorded track with your favorite combination of tubes and just enjoy the music. Listen for new details emerging, estimate how wide the sound stage is (in my case how far outside the speakers the sound seems to emanate, tested with closed eyes and pointing a finger to where the sound seems to come from - I mean, u need a little exercise while listening), listen how realistic the cymbals and bass drum sound. With a good recording and great tubes the magic comes back....

 

My present favorite combination is the IR tubes with DTox. A very sweet mid range, plenty of detail, and all the punch and slam and shimmer I want in the lows and the highs.

 

Based on what you have written my impression is that you like a somewhat dry presentation with very detailed treble. If this is correct, you have to find the tubes that highlight your taste. As for me, if the bass is not up to my standards and taste of slam and attack, the tube is not for me. The mid range must also be sweet and no sibilance in the treble.

 

I am sure that with a little patience you will re-discover the excitement and magic of listening to the LD. Good luck!

post #2781 of 6832

I have found myself pulled back to triodes.... After spending most of the last week with the GE 6AV6 and the FIVER and Toshiba clones, last night I put in the Mullard Blackburn EH90s, EF95 1-7, but in comparison to these triodes, felt that the treble was lacking. Switched them to EF92, and yes, now they sounded like triodes!  But still not quite there.... So I have happily gone back to my GE 6AV6....

 

Again, I have a pair of 1958 GE with a top-mounted D-getters. Perusing eBay, it looks like almost every GE 6AV6 looks different from every other. There is a tremendous variation in the construction of these tubes, and I do wonder if they all sound essentially the same..... 

post #2782 of 6832

Well, wow, I didn't expect to get so much feedback withing the hour lol! Thanks for the help and impressions, I appreciate it.

 

I do feel that I should just kick back for a couple a days and go even further back to, say, the TS 6485; just spend an evening or two listening to music. But then again, I also feel that going back to my mystery Pinnacle EBC91 -which are still a mystery at this point, oddly enough- might also do me some good.

 

Interestingly, and that had occurred to me this morning, my last listening session was late in the afternoon yesterday, and not at night/very late at night as per usual. It's hardly the first time I use my LD or gear before dinner, but still, I have noticed in the past how it doesn't sound so much "bad" as it just brings out the worst in the gear when I use it during the day, as the power is definitely worse. Basically, it's akin to listening to the same gear but in sub-par conditions.

 

Still, I think that it doesn't detract from my issue with the current tubes though; my last listening session just emphasized it. So, It do need to go back to the drawing board a bit. Yes, I do like not-too-tubey tubes -aka a little dry- but I also enjoy the tube sound exactly for that, a slightly warm and physiological sound.

 

Gibosi might be right: I need to go back and listen to all my previous "staple food" tubes, regardless of their type. I get the feeling that the 6AV6 type was never really given the attention it deserved on the thread, unlike some pentodes that immediately got raving reviews. I ought to backtrack a bit and re-listen to my previous best-in-class tubes.

 

I do hope I'm being too annoying with my tube ramblings... Pardon me if I am lol! I know I personally like to read about people -head-fiers'- "path" or "road" towards better audio, and all the steps -including the bad ones- in the process; not everyone does.

post #2783 of 6832
Quote:
Originally Posted by gibosi View Post
 

I have found myself pulled back to triodes.... After spending most of the last week with the GE 6AV6 and the FIVER and Toshiba clones, last night I put in the Mullard Blackburn EH90s, EF95 1-7, but in comparison to these triodes, felt that the treble was lacking. Switched them to EF92, and yes, now they sounded like triodes!  But still not quite there.... So I have happily gone back to my GE 6AV6....

 

Again, I have a pair of 1958 GE with a top-mounted D-getters. Perusing eBay, it looks like almost every GE 6AV6 looks different from every other. There is a tremendous variation in the construction of these tubes, and I do wonder if they all sound essentially the same..... 

I got 6 pairs of 6av6 from different manufactures and i would say theres no or small differences between them they all have about same sound signature.to these olden ears.

post #2784 of 6832

You describe the Tele vanias EH900S as tame but detailed. I agree with my Telefunken EH900S, they are as well. Here is another one but slightly different. The Sylvania JAN 5750 (= 6BE6W) are alike but dark.You think they are maybe a bit too dark. Then you listen and are surprised about the huge stage and details pouring at you. Once you are used to it, they give a lot. I felt this was an experience a bit similar to yours.

 

 

Re balanced power tubes. Sounds OK, that they should be better matched than driver tubes. However, I doubt even your driver tubes as they come with the LD were perfectly matched. Also, it is not so easy to match if do not have a huge stash of tubes. I bought my IRs not matche as I couldn't find anyone matching them. They are date matched though and I am perfectly happy with them.


Edited by Acapella11 - 9/4/13 at 2:10pm
post #2785 of 6832

DISCLAMER: DO NOT TRY THIS AT HOME.  This is my reach for the sky setup for 6ah6 tubes EF92 amp to EF95adaptor to 6AU6 adaptor .

post #2786 of 6832
Quote:
Originally Posted by MIKELAP View Post
 

DISCLAMER: DO NOT TRY THIS AT HOME.  This is my reach for the sky setup for 6ah6 tubes EF92 amp to EF95adaptor to 6AU6 adaptor .

Nice! :D

post #2787 of 6832

Well I put the halo getter RCA 6BY6's in strapped at 2-7, a lot more Bass presence and sounding good so far.

 

Going to need a new panel mount jack for the MK IV since I didn't get the SE version the headphone jack was said to be of lesser quality, there's an understatement.

I had noticed if you lightly push the headphone plug to the left you loose the right channel, I took the jack out as far as the wires would let it come and it is SERIOUS JUNK.

 

So one of these will be ordered pronto.

Neutrik NJ3FP6C-B

It shouldn't be any problem to change, I'll see if I can get some board pictures when I have the MK IV apart.

 

What are the Tung Sol 6AH6WA like?

Would I like them? :biggrin:

post #2788 of 6832
Quote:
Originally Posted by TrollDragon View Post
 

What are the Tung Sol 6AH6WA like?

Would I like them? :biggrin:

 

The quality versions of the Tung-Sol 6AH6, the 6AH6WA and the 6485, are superb tubes. And I am quite certain that you would like them. Here is some discussion from last April, about the time of their discovery :

 

http://www.head-fi.org/t/563884/little-dot-tube-amps-vacuum-tube-rolling-guide/1065#post_9365551

 

http://www.head-fi.org/t/563884/little-dot-tube-amps-vacuum-tube-rolling-guide/1125#post_9384251

post #2789 of 6832
Thanks gibosi, I shall indeed look into a pair.
Edited by TrollDragon - 9/4/13 at 9:54pm
post #2790 of 6832

Received now a Soviet tube 6A2P  = 6BE6

 

 

I don't see it's name, may be Svetlana ?

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