[ianmedium]

Thanks for the welcome Guys, Life gets in the way and its been super busy this year for me.

I also have some good news about our beloved ASP that I think is OK to share as it will be seen in the near future. I have connected Shikada San up with a friend in the UK who is a long time audio reviewer for HiFi World amongst others and Shikada San is sending him an amp to review!

Don't know if you know as well but he has been quite ill of late but is now on the road to recovery.

 

[smial1966]

A very interesting development from Shikada-san courtesy of his face book page -
 
This is TR-07hp (HeadPhone) Prototype.
>S.I.T (V-FET) triode characteristic.
>Class A
>006P Battery Use
>Full Discrete
>Non NFB
>5~100KHz

The most simple pure transistor amp
 

 
- perhaps the more technically knowledgeable thread members could comment on the use of a S.I.T

 

[AnakChan]

A very interesting development from Shikada-san courtesy of his face book page -

[COLOR=141823]This is TR-07hp (HeadPhone) Prototype.[/COLOR][COLOR=141823]
[/COLOR][COLOR=141823]>S.I.T (V-FET) triode characteristic.[/COLOR][COLOR=141823]
[/COLOR][COLOR=141823]>Class A[/COLOR][COLOR=141823]
[/COLOR][COLOR=141823]>006P Battery Use[/COLOR][COLOR=141823]
[/COLOR][COLOR=141823]>Full Discrete[/COLOR][COLOR=141823]
[/COLOR][COLOR=141823]>Non NFB[/COLOR]
>5~100KHz


The most simple pure transistor amp

- perhaps the more technically knowledgeable thread members could comment on the use of a S.I.T

Presumably a further refinement on this :-

http://www.head-fi.org/t/727389/tokyo-fujiya-summer-potaken-festival-19th-july-2014/0_20

 

[bmichels]

While waiting for my "Big" Eddie Current 445 to arrive, I just received his (very) little brother to keep company with theTU-05 

 
Note that the input in on the side to be compatible with the HUGO lay-out, and that a 1/4 Jack plug has been added.
 

 
So, now, "on the go" or at home, I will be "all tube"
 

 
 

 
YES:  AK100 > HUGO > TUR-06 tube amp  
 

 

 

[woodcans]

^ A _very_ slick brick!

 

[bmichels]

^ A _very_ slick brick!

 
Less slick than with it's big brother
 
 
 
  

 

[LFC_SL]

bmichels

Extra charge for making easier to pair with Hugo?

 

[bmichels]

@bmichels

Extra charge for making easier to pair with Hugo?

no extra charge

 

[smial1966]

Very nice portable rig!

 
Does the HUGO benefit from amping with a hybrid design? I find the HUGO amp section to be very good, so I'm very interested what the TUR-06 brings to your setup sonically.   
 
Quote:

   
Less slick than with it's big brother
 
 
 
  

 

[bmichels]

Does the HUGO benefit from amping with a hybrid design? I find the HUGO amp section to be very good, so I'm very interested what the TUR-06 brings to your setup sonically.   

 
It is too early to tell if the  HUGO > TUR-06  is better than HUGO only.  
 
I need to break-in the tubes first, and also do...some tube rolling (like I did in the past with my TU-05 to find my prefered combination, but here it will be much easier since you have only 1 pair of tube to change, not a combination of "voltage stage" tubes + "power stage" tubes !) 
 
Here is the collection of "small" tubes that I have built for the TU-05: The TUR-06 will accept only the one on the left since only it's "voltage stage" is tube, the right side are tubes for the "power stage" of the bigger brother TU-05 that was "all tubes" while the TUR-06 is "hybrid".
 
I really enjoyed in my TU-05 for the 'voltage stage": the  RCA 1U4 (orange printing), the Telefunken df904/1U4 (diamond base - Berlin made) and the  RTF DF97 (Modified with pin 4 and 5 connected together).  I will see if they are also my prefered one in the TU-06...
 
(but first I need to check if the TUR-06 can also use the RTF97 Modified with pin 4 and 5 connected together. Don't want to damage it.  German Guy ??)
 
 --> Any recommendation as which one to try first ? 
 

 
the beauty of those small tubes is that you get them for around 6$ to 10$ on Ebay  

 
including some quite exotics like those with holes inside that I found by chance.
 

 

 
the original TU-05 & my new TUR-06 together : 
 

 

[xplosive]

Wow that is one of a kind tur06 bmichels. what a beauty. So happy you have received them.
My recommendation you might want to try the rca tube first and put the telefunken pair the last. You may able to appreciate the sonic difference then.
 
Hope to hear your impression between the tu05 and tur06. the tur06 still my main portable amp.
Quote:

   
It is too early to tell if the  HUGO > TUR-06  is better than HUGO only.  
 
I need to break-in the tubes first, and also do...some tube rolling (like I did in the past with my TU-05 to find my prefered combination, but here it will be much easier since you have only 1 pair of tube to change, not a combination of "voltage stage" tubes + "power stage" tubes !) 
 
Here is the collection of "small" tubes that I have built for the TU-05: The TUR-06 will accept only the one on the left since only it's "voltage stage" is tube, the right side are tubes for the "power stage" of the bigger brother TU-05 that was "all tubes" while the TUR-06 is "hybrid".
 
I really enjoyed in my TU-05 for the 'voltage stage": the  RCA 1U4 (orange printing), the Telefunken df904/1U4 (diamond base - Berlin made) and the  RTF DF97 (Modified with pin 4 and 5 connected together).  I will see if they are also my prefered one in the TU-06...
 
(but first I need to check if the TUR-06 can also use the RTF97 Modified with pin 4 and 5 connected together. Don't want to damage it.  German Guy ??)
 
 --> Any recommendation as which one to try first ? 
 

 
the beauty of those small tubes is that you get them for around 6$ to 10$ on Ebay  

 
including some quite exotics like those with holes inside that I found by chance.
 

 

 
the original TU-05 & my new TUR-06 together : 
 

 

[bmichels]

inside the beast...
 

 
and now... let's start some tube rolling ....
 

 

[bmichels]

After some tube-rolling...  the winner is: Mazda 1T4
 
   
 
for a (not so) portable 3 pieces set-up.
 
 
 
and if you want to see it naked (  Free porn
 

 

[bonitomio]

Awesome gear bmichels!
Congrats on the baby brother

 

[ianmedium]

Love how you have combined the DAC with amp, I bet it sounds great!
I had a new arrival today and will report as to how it sounds in combination with the TU-05