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post #3691 of 3699

My turn to do tube rolling :biggrin:

I will test an all-Mullard solution and a Telefunken DF904 with Philips DL92. They are on their way.

 

Meanwhile, I received a MHDT Stockholm 2 DAC (R2R Non Oversampling and triode tube output). Pure beauty sound with the TU-05.

 

- chris

post #3692 of 3699
Quote:
Originally Posted by rumina View Post
 

I received my TR-07hp mk2 some weeks ago and i'm verry happy with it. The amp is nicly

build with a DIY touch what i like. As you may know the amp use 2 vfet transistors from Sony

(2SK79), the are discontinued since years and hard to find. Vfet have a triode characteristic,

so a tube like sound is the result.

 

The bass is detailed, deep and strong - hard to finde a portable amp so competent. The mids

are soft and nicely balanced, some extra details are missing, the focus here is on a enjoyable

side, not a analytic one. The highs are not very extended but fits the character of the amp very

well. Some will say that the amp is missing here some parts of the music. Overall is a natural

sounding amp with the focus of enjoyment and easiness, not neutrality. Soundstage is either

super wide nor narrow, that fits fine. The presentation is not very 3d, leans on the flat side.

What is realy nice that this all comes with a quite speedy and direct prensentation - not muddy

oder sticky like other tube amps. If you know the neslon pass house sound, think of it minus

some details in the highs and limited 3th dimension.

 

The power output is weak, don't try to use low efficieny and/or high ohm headphones. Works

great with sensitive headphones like Fostex TH-900, here the not so prominent highs fits the

character of the TH-900 perfect. With the Piano Forte X the bass gets some extra power and

the presentation is super smooth. At the moment i used it most of the time with some AK T8ie,

a great pairing too.

 

The amp needs some time to sound best, about 15-20 minutes. It gets warm after 1 hour.

Runtime is short with about 4 hours, charging time long with about 8 hours. So its not the

best amp for portable use due the limited runtime and warm up time.

 

It's a amp for people who like to dive into the music and not into analytics. This amp brings

you to the music no away from it.

Update 04/2016

 

Love is strong for this amp after some weeks, it realy shines with easy to drive headphones or

iem. With the AK T8iE the Bass around 150 hz gets to dominant for me, i eq these iem with a

bump of -3 db around 150 hz. Direct driven from the AK240 i would put the bass down only the

half. A weakness of this amp are complex multi layered arragements, like in a opera where the

whole orchestra is playing, the instruments blend together and loosing contour, that was special

to realise because the amps nature is quite speedy and i wasn't expecting this. I never had this

effect with any amp who is at the same time not on the slow or muddy side. It's for me not a big

no go because you need to throw a lot of musical information at the same time at the amp that

this happens but when it does it's obvious. No problem at all when you listen to jazz, country,

latin or arragments with a dozen instruments. Maybe it's like a supercar performing perfect but

when the limit is reached he failes heavy. But anyway, i often grab this combo at home even if

i could choose great desktop gear/full size headphones, a pleasure to dig deep into the music.

 

I measured the charging power, it's 0.65 a and drop to near zero after 4 hours, so the battery

should be near full after 4 hours.

 

Receiving the Ocharaku Flat4-Sakura Plus tomorrow after they get out of the customs i'm very

exicted to discover this new combo :etysmile:, have a good feeling that's also a great pairing.

post #3693 of 3699

Small review of my Mullard (CV820 and CV785) experience on TU-05, compared to the original tubes  (original from A2P: 1U4 Raytheon from the US Army and 3S4 from General Electrics) which is a very good combo.

 

I was expecting a romantic personnality, but not at all: bass might be a little deeper but this is not obvious at all, medium is a little bit recessed compared to the original one but also more refined, higher frequencies are very refined, never aggressive, and I would say the combo adds musicality, at the cost of a little bit less definition and space. I like it more than the original combo.

 

Hope to test DF904 Telefunken and DL92 Philips soon. 

post #3694 of 3699
Thx for the update and specifics, good to know for us lurkers who are saving up our pennies for one of these.
Quote:
Originally Posted by rumina View Post

Update 04/2016

Love is strong for this amp after some weeks, it realy shines with easy to drive headphones or
iem. With the AK T8iE the Bass around 150 hz gets to dominant for me, i eq these iem with a
bump of -3 db around 150 hz. Direct driven from the AK240 i would put the bass down only the
half. A weakness of this amp are complex multi layered arragements, like in a opera where the
whole orchestra is playing, the instruments blend together and loosing contour, that was special
to realise because the amps nature is quite speedy and i wasn't expecting this. I never had this
effect with any amp who is at the same time not on the slow or muddy side. It's for me not a big
no go because you need to throw a lot of musical information at the same time at the amp that
this happens but when it does it's obvious. No problem at all when you listen to jazz, country,
latin or arragments with a dozen instruments. Maybe it's like a supercar performing perfect but
when the limit is reached he failes heavy. But anyway, i often grab this combo at home even if
i could choose great desktop gear/full size headphones, a pleasure to dig deep into the music.

I measured the charging power, it's 0.65 a and drop to near zero after 4 hours, so the battery
should be near full after 4 hours.

Receiving the Ocharaku Flat4-Sakura Plus tomorrow after they get out of the customs i'm very
exicted to discover this new combo etysmile.gif , have a good feeling that's also a great pairing.
post #3695 of 3699
post #3696 of 3699
I published here my test of my TU-05 against the WooAudio WA8.  using my HUGO and HE-X 



NOTE: I have not used my TU-05 during this last year, using mostly my HUGO direct to HE-X or to feed my Eddie Curent 445, but.... thanks to this test I realized how the TU-05 improves the HUGO when using the HE-X, so now I will at home always use HUGO+TU-05 instead of HUGO direct tongue.gif


Edited by bmichels - 6/19/16 at 6:39am
post #3697 of 3699
Hello. By chance I have bought a used Tur06. Does any body going to visit London CanJam with the last version* of the amp? Since I want to compare, how it improves the sound before sending my to Japan for an upgrade...
post #3698 of 3699

Hello, its been a while off from this thread. just want to share my latest addition to my (old) setup.

 

 

the tur06 still in early version (mine is #4) and i love it.

post #3699 of 3699
Great to hear, that it might be not necessary to send the amp for an upgrade. What headphones can you especially recommend to Tur06? For jazz and opera mostly...
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