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Analog Squared Paper Discussion Thread. - Page 117

post #1741 of 3704

btw - testing my own recomendation i gave bmichels starting yesterday i listen to the

 

valvo df91 red label - tung-sol mil-spec dl92 combo - sorry - see my edit: note

 

and the more i listen to that combo i have the feeling it could be the real dream combo. bass like the mullards, but delivering the same quality in the mids and highs and a soundstage width and depth to die for.

 

the only thing to mention that could be improved up to now is a sometimes slightly grainy sound.

 

the amp and the t5p together are really a dream team.

 

i now also can understand that you sometimes wrote about your tube ting problems, the t5p is really hypersensitve and so high resolving, immediately when starting to listen to the t5p i heard the same, just touch the amp or plug in the headphone.

 

interestingly my felt protective case is very efficient in decoupling the amp. i even can knock on the felt protective case (amp inside), nothing to hear!

 

edit:

 

when changing the tubes i noticed that instead of what i wrote above it was the

 

valvo df91 red label - tesla 1l33 combo !


Edited by GermanGuy - 8/19/13 at 11:24am
post #1742 of 3704
GG, I must admit one day I did put them on the wrong way but my ears kept hitting the mesh and I found it uncomfortable.

I wondered what they would sound like with silver wire. It would be great if possible to listen with the stock cable as well and see what that does, I must admit this is the first full sized headphone I have owned where I really feel no need to change cables but that is just personal choice.

As I said though, burn in with these is so important, I can't believe what a good 300 hours on them did, you will find the soundstage opens up even more, transients are razor sharp and bass deeper, not to the levels of the LCD's it is true but so clean and defined, I truly feel these headphones area perfect match for the 05.

Now then, try them with Phillips DL92's and Mullard DF91's, I think you will find you will strike a balance of bass depth and warmth with detail and texture, let me know what you think!

Arggh, all this talk is making me miss mine even more! I have been tinkering with the base for it in the meantime and just waiting for my AK120 to arrive (which is now confirmed as Wednesday or Thursday).
post #1743 of 3704

ianmedium - did you post my pictures on shikada-san's facebook page?

post #1744 of 3704
Not yet, but am going to do it today! Been a bit busy this week travelling down to LA and back a couple of times!
post #1745 of 3704

today i called a tube seller to ask which tubes else would be compatible. not compatible in size and so tube socket, but electrically compatible it would be possible to build a desktop version of the tu-05 with this first generation battery radio tubes, it would look gorgeous i think:

 

Processed By eBay with ImageMagick, z1.1.0. ||B2

 

Processed By eBay with ImageMagick, z1.1.0. ||B2

post #1746 of 3704
I have a thing for those painted valves, the red one looks wonderful, i see it has one of those caps that is a connector as well.. You know, considering the low voltage of the tubes we use I suppose I could always spray paint them blink.gifbiggrin.gif
post #1747 of 3704

Ok now I will try to bring some input on tube rather than just asking for advices :-)

 

As you know I have 2 Lorenz df96, but they are of 2 different types. However I tried them:

 

- tried :  Lorenz df96 + Tung-sol ken rad dl92  

- and tried : Telefunken DF904 / Tung-sol ken rad dl92

 

and did not likes it either of them...  

 

 

So, So far I much prefer  Telefunken DF904 / Philips DL92  or  Lorenz df96 / Philips DL92 

 

--> Looks like Philips of much better to my ear than Tung-sol ken rad dl92 ?

 

But: I found that the Telefunken DF904  is very sensitive to titling !  

post #1748 of 3704

i think it is possible to use DF97 tubes in the df91 stage by just connecting pin 4 to pin 5 of the tube or solder the similar connection inside the amp (tube socket) as pin 4 of the df91 has no function:

 

Processed By eBay with ImageMagick, z1.1.0. ||B2

 

to test this i bought 4 RFT df97. 

 

i also think that it is possible to adapt this funny little df61 tubes by making an adapter and providing a resistor for the heater voltage:

 

Processed By eBay with ImageMagick, z1.1.0. ||B2

 

to test this i bought 4 df61 (not the ones on this picture) and you won´t believe, they are LORENZ ones!


Edited by GermanGuy - 8/19/13 at 11:29am
post #1749 of 3704

Thought you chaps may be interested in this. Sasaki-san has written a little snippet about the RWAK100S mod with the TU-05b :-

 

http://www.head-fi.org/t/677700/rwak100-s-review-a-highend-audio-player#post_9723835

 

Meanwhile, I'm trying this combination, HM-901 -> TUR-06 -> Tralucent Silver/Gold cable -> FitEar MH335DW and it's working quite well actually! The TUR-06 seems to give a better balance to the MH335DW's bassy signature. I dare say that I prefer the TUR-06 amp out more than the HM-901's balanced amp module. But naturally this is quite a bulky setup. This seems to work well for those earphones/headphones that are on the warmer side. It seems to fill in the a little more on the upper mids to treble end giving it a slightly more tonally balanced signature overall. I've not tried it with brighter earphones/headphones though.

 

 

I did find another small issue with the 3.5mm headphone jack. It's really for SE 3.5mm and if one had a TRRS-styled 3.5mm plug, one would have to fiddle it a little to get the right channel balance.

post #1750 of 3704
Anak, great picture, did you let Shikada san know about the jack issue? It might be a good idea so he can offer an option of jacks. In the meantime I am sure your probably aware of this little product but it would sort your issue out.
http://www.scansound.com/index.php/4-conductor-trrs-to-3-conductor-trs-3-5mm-adapter.html

Great picture and I am glad your enjoying the amp. Whilst you were away I plumped for the AK120, nearly went for the 901 but it was the DSD files that swayed me, mine will be here this week!
post #1751 of 3704
Quote:
Originally Posted by ianmedium View Post

Anak, great picture, did you let Shikada san know about the jack issue? It might be a good idea so he can offer an option of jacks. In the meantime I am sure your probably aware of this little product but it would sort your issue out.
http://www.scansound.com/index.php/4-conductor-trrs-to-3-conductor-trs-3-5mm-adapter.html

Great picture and I am glad your enjoying the amp. Whilst you were away I plumped for the AK120, nearly went for the 901 but it was the DSD files that swayed me, mine will be here this week!

 

Thx for the cable adapter option. I've not told him yet as I just found out in the past hr or two. I've seriously considered getting another AK120 just to mod it to the RWAK120S but reviews are scarce and not to mention (as in my previous conversations with bmichels) if iRiver supersedes the AK120, it'll render my AK120 and the proposed RWAK120S obsolete.

 

The HM-901 works well. I'm hoping that Fang will sort out the DSD issue in their 1.81beta. Then the HM-901 can play DSD too (and hopefully natively unlike the AK120).

 

Size-wise though, you can't go wrong with the AK120.

post #1752 of 3704

By the way, switched tubes to the NEC 1T4SF. The bass floor just dropped :p. Deeper bass extension at the cost of slight treble rolloff. But nice rumble, and nice imaging. Treble is still natural and present but just not as forward as the Sylvania.

post #1753 of 3704
Quote:
Originally Posted by AnakChan View Post

By the way, switched tubes to the NEC 1T4SF. The bass floor just dropped :p. Deeper bass extension at the cost of slight treble rolloff. But nice rumble, and nice imaging. Treble is still natural and present but just not as forward as the Sylvania.


could you post a link where to buy them?

post #1754 of 3704
Quote:
Originally Posted by GermanGuy View Post


could you post a link where to buy them?
I picked up the NEC 1T4SF from a store in Akihabara. I don't know if they even have a web presence.
post #1755 of 3704

the four brimar df91 tubes (the tubes with the stamp on it) arrived today, also the additional four tung-sol mil-spec dl92's i bought because why ever i can't find four of the six tung-sol's i bought before.

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