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Analog Squared Paper Discussion and Appreciation Thread. - Page 79

post #1171 of 3484
Great thoughts!

I missed it before but what is the interconnect cable your using, it looks much more flexible than my Kimber!
post #1172 of 3484
Quote:
Originally Posted by ianmedium View Post

Great thoughts!

I missed it before but what is the interconnect cable your using, it looks much more flexible than my Kimber!

BTG Audio 8 strand cable with Oyaide RA plugs. Very flexible and sounds great.
post #1173 of 3484
Thanks mate, will check it out!
post #1174 of 3484
I am new to this topic and would like to ask (I apologize) if those has already been asked before. What is the difference in sound signature of TU-05b vs TU-06? Are both of them tranportable? It seems that TU-05b is quite big. What (full size) headphone can be driven effectively by TU-05b and TU-06? Are they really hot while running? The output of TU-05b is 30mW+30mW while 100mW + 100mW, does it mean that TU-05b is limited in driving power for the full sized headphone? However I have seen Cary amplifier with has only a few watt but it can drive Proac Response 1Sc while other 60W solid state amplifier can not drive effectively Which player is most appropriate to use with the analog paper amplifier : ipod, imod, Iriver AK100, Iriver AK120 (or modification), HM901 Please vote for best sounding tubes for TU-05b and TU-06 thanks,
post #1175 of 3484
I will leave it to Anak Chan to answer about the different sound signatures of the two amps as I think he is the only one who has heard both back to back for an extended time.

The 05 is indeed quite large by portable standards. I like to think of it as a transportable amp, something you could take on holiday with you and be able to listen to lovely tunes at the end of the day in your hotel room.. Thats what I do!

With the 05's anything with an impedance of up to 200Ohm can be driven by it. I don't know about higher though. I think German Guy has some HD800's, I wonder if he has tried those with it?

i won't say which are the best sounding tubes as it can be so difficult saying what is best for another persons hearing. I know i love several combinations for different reasons but in truth the stock tubes sound great as well.

I find really great synergy with my HM-801 and I know a couple of folks here love the amp with their Tera Players. Also GG is loving it with his Colourfly C4

The amps never get hot, the tubes are radio tubes designed to run on low voltages and have a very long life. The hottest I have experienced the tubes getting is the same sort of temperature of tepid water. The case in my experience even when it is hot as it is here now never gets hot.

Hope that helps and welcome!
post #1176 of 3484
Someone called my name :D??

Per Ian, I've only used the TH-900 and didn't try any "hard to drive" headphones on them. However the demo units I had were tuned for easy-to-drive headphones. I believe you can choose what gain setting you want during the pre-build time (or in bmichel's case, a multi input but that's based on the input power rather than output to the headphones?).
I'd like to add a quick comment though in the last Fujiya show last week, Shikada-san actually demonstrated to the audiences of this TU-05b driving small table speakers. Unfortunately I didn't pay attention to what speakers they were nor their specs. I'll drop him a mail about it.

They don't get hot as Ian mentioned. The LED which lights up the tubes are somewhat misleading in the sense that it looks like the tubes are glowing hot but not really. Still though, I wouldn't run it in a completely enclosed case but with something like A2P's vented leather case instead.

Size-wise, I classify both as transportables however the weight of the TUR-06 is sub 500g which isn't that heavy. I'd say take your pick on whatever source you want to use. I've tried with the RWAK100 and Go-DAP DD OPA627SM 12V LE. Both worked fine.

As for the sound signature, I've written a review if you look in my signature. At a high level though, to -MY- ears, the TU-05b is probably the more neutral and audiophile-finesse signature whilst the TUR-06 has more of the fun deep bass-styled signature. I'm actually going for the TUR-06 myself for the smaller sized transportable, and I think I need some fun in my life.
post #1177 of 3484

the tu-05 sounds absolutely great with the headphones listed in my inventory (i ordered it with 16-32 and 16-120 ohm impedance settings), also with the iem's, dead silient, but NOT WITH THE HD800 (typical impedance mismatch, much to dark, lifeless, no detail, no highs).


Edited by GermanGuy - 7/22/13 at 1:36am
post #1178 of 3484

Well, one, or both of the mil spec Ken Rads are noisy - tissue crinkle. I noticed today while listening to some quiet classical passages and in between tracks. Going back to the Siemens until I have more pin cleaning time to prepare some other brands.

post #1179 of 3484

Very very funny: After some tube rolling, I finally prefer... the stock tubes :  RAYTHERON 3S4 + RCA (1U4 or 1T4)   wink_face.gif

 

I find more fun and better gain in the stock tubes. More bass also !  I guess I have been very fortunate to get this unusual stock tube set.

 

But... how can I know if the RCA are 1U4 or 1T4 ?  I can read on them "made in USA 64EX4" and the gain is really better than with the other tubes (I listen at 12 O'clock with them when, where for the same sound level, I need to set volume at 3 O'clock with all other combination).  Can it help ? 

 

 

 

 

 

 

 

 

So far I have tested :

 

- Combination 1 : Sylvania 3S4 + Tungsram 1T4T 

- Combination 2: Mullard 3S4 +  Tungsram 1T4T

Combination 3 : Mullard 3S4  + Siemens  DF91

And..

 

I know I will one day test more combination (I have 2 siemens DL92 to test with those tubes, and I will also test the "famous" philips dl 92 (3S4) + telefunken df904 mil spec  (1U4)... when I can get my hand on them.

 

Question: is the "milspecs" important for the telefunken df904 ?  All i can find so far is apparently  "NON MilSpecs" !

 

 

Anyway, I will listen to your advices and give my hears some listening time with the stock tubes before I start again some tests tongue.gif

 

thanks to you all....


Edited by bmichels - 7/22/13 at 12:36pm
post #1180 of 3484
Quote:
Originally Posted by bmichels View Post

Very very funny: After some tube rolling, I finally prefer... the stock tubes :  RAYTHERON 3S4 + RCA (1U4 or 1T4)   wink_face.gif

 

 

 

Question: is the "milspecs" important for the Siemens ?

 

 

Anyway, I will listen to your advices and give my hears some listening time with the stock tubes before I start again some tests tongue.gif

 

thanks to you all....

 

 

I don't think that my Siemens, that I prefer over my mil spec Ken Rads, are mil specs.

post #1181 of 3484
bmichels, your RCA's will be 1U4's, i have yet to see any that are 1T4.

Woodcans, I am sorry about the tissue thing. Hopefully it will be the same as I found and it is dirty pins!
post #1182 of 3484
Quote:
Originally Posted by ianmedium View Post

bmichels, your RCA's will be 1U4's, i have yet to see any that are 1T4.

Woodcans, I am sorry about the tissue thing. Hopefully it will be the same as I found and it is dirty pins!

No RCA 1T4 ?. B....ut look here for example and  here also !

 

 

Anyway.... does the fact that they are 1T4 explain why they provide more gain than the other combos that I have tested ?

 

And also, and do you think that the  "milspecs" are important for the telefunken df904 ?  Or can I go ahead and purchase the telefunken df904 "non-mim specs" that I have found on Ebay ?


Edited by bmichels - 7/22/13 at 1:26pm
post #1183 of 3484
Well, that is a first! I have not seen RCA's with 1T4 before.

I can't answer about the Mil-spec as it just all seems a crapshoot to me, some mil-spec I have have performed wonderful, others less so. I got non mil-spec ones myself so will see what they sound like. I think most importantly see if they have the diamond on the base. The previous Tele's I got did not so I think I had a rebranded pair.

As far as I am aware there is no physical way of telling a 1T4 from a 1U4 other than the printing on the glass. I would drop Shikada san a line and ask him. If they are 1U4's you will not need as much volume on the control as you would the 1T4's for the same level of volume if that makes sense!
post #1184 of 3484
Quote:
Originally Posted by ianmedium View Post

..... I think most importantly see if they have the diamond on the base. The previous Tele's I got did not so I think I had a rebranded pair.

 

Ian,

 

- What do you mean by "the diamond on the base" ? Can you show me where/what to look ? 

 

 

- And, Do you think those are "real telefunken with diamond" ?  

 

The descriptions on Ebay is :  3x Röhre Telefunken 1U4 / DF904 für Batterie-Kofferradios, Akkord und Co., NOS

 

What is " Röhre " ???

 

post #1185 of 3484
Quote:
Originally Posted by smial1966 View Post

bmichels,

This thread has succumbed to an element of tube rolling mania. I don't mean this in a derogatory sense at all. But it seems that every last tube purchase when combined with the XYZ of thermionic nirvana imparts an almost mystical ambiance to the sound quality of this amplifier. Far enough if your hearing is acute enough to discern such infinitesimally small 'differences'. But having rolled a fair number of tubes, to my mind these 'differences' aren't worth stressing about. By all means change the stock tubes after thoroughly auditioning them, but please don't think that the rarefied Lorenz (or some other virtually unobtainable tube) will somehow transmogrify your amplifier into an aural ambrosia bestowing device that will transform your listening experience, as the tubes impart a 5-10% sonically different flavour at most. So enjoy what you've got and roll the tubes at your peril! ;-)

Cheers,
Andy.

 

Andy, I think it is a good thing to bring some perspective to the 'side hobby' of tube rolling. I also think that once one gets to know the amplifier and its sound, that the small differences become easily detectable, despite being a small percentage of the overall sound quality, and this is what leads to the fun, and (in some cases over-) excitement regarding different tube's sound signatures. Oh, and the fact that you used the term 'transmogrify' pleases me immensely.

 

Quote:
Originally Posted by ianmedium View Post

bmichels, your RCA's will be 1U4's, i have yet to see any that are 1T4.

Woodcans, I am sorry about the tissue thing. Hopefully it will be the same as I found and it is dirty pins!

 

The pins were still mildly to moderately dirty despite a quick 'n dirty, ahem, cleaning job. I'll report back after a proper cleaning if the problem is solved. In the meantime I did a decent clean on the Mullard 3s4's which are currently running in for a bit before a short listening session later tonight.

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