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post #361 of 3704
Unfortunately I have returned the A2P amps. Shikada-san loaned them to me for only a week.

I've seen the Wagnus numerous occasions but never tried them. I'll give them a shot one day.
post #362 of 3704

AnakChan, when you do get to place your order, I would appreciate you sharing the details and what upgrades you choose.  I have a feeling when it comes to my turn, I will most likely mimic yours.  Thanks for your feedback...


Edited by ButtUglyJeff - 6/12/13 at 7:17am
post #363 of 3704
Quote:
Originally Posted by ButtUglyJeff View Post

AnakChan, when you do get to place your order, I would appreciate you sharing the details and what upgrades you choose.  I have a feeling when it comes to my turn, I will most likely mimic yours.  Thanks for your feedback...

 

For the TUR-06, there will be no upgrades. He's making all of them standard unlike the TU-05b where it's made-to-order. I have recommended to him to use a different style of charging port 'cos with the current one, it's easy to short the + & - as they're quite exposed. However he has a built-in circuit break system though so it's protected however need to the charger to reset the breaker.

post #364 of 3704
Quote:
Originally Posted by AnakChan View Post

I'm not certain about the design but I did have the TH-05b side-by-side with my Zana Deux and from what I remember, the ZD did present a bigger staging and richer sound across the FR. Not that price should matter however I just happened to be lucky to pick up my 2nd hand ZD for $1600 shipping incl., otherwise a new ZDSE is almost twice the price of a new TH-05b.

When you consider the excellent Zana Deux is a mains powered amp as well with higher power feeding tubes it is a compliment indeed that the 05's can be talked about in the same breathe especially when one considers Shikada san has achieved this with battery power and low power tubes. I would think the bigger iron would be a major part of the bigger staging and richer sound.

This is the second time I have heard the 05 compared not with amps around the same price point but with ones much higher that have higher grade components which makes his design I feel even more remarkable.

I think your right going for the 06', If i had the Zana Deaux I would too, what a wonderful amp that is!
post #365 of 3704
Quote:
Originally Posted by AnakChan View Post

 

For the TUR-06, there will be no upgrades. He's making all of them standard unlike the TU-05b where it's made-to-order. I have recommended to him to use a different style of charging port 'cos with the current one, it's easy to short the + & - as they're quite exposed. However he has a built-in circuit break system though so it's protected however need to the charger to reset the breaker.

 

That actually sounds like a smart strategy.  Having a lower price point will attract more to his product, and this will allow for easier production of multiple units at one time.  I have to admit the orange LED TU-05b did look quite handsome, like it was complimenting the glow of the tubes.  But that is so far from being necessary, in my book.

post #366 of 3704
Jeff.
I learned early on that the tubes don't glow! I was lauding it when I got the amp and then one kind chap said "check they are not LED's creating the light as those tubes don't produce enough power to glow!"

So I asked Shikada San and he said that indeed they are LED's and he did it for two reasons. One is aesthetics so you get the feeling of that nice warm glow but more importantly he did it so as we can be sure that all the tubes are in circuit and working. If one or more of the LED's don't light then stop using the amp and send it back. It is sort of a fail safe feature.


So, though I have yet to see this you could have any colour you like I guess. If you like the way Mcintosh use green LED's to light tubes on some of their amps ( see, even the high end guys are at it!) so you could ask to have green LED's and have it looking like a Mini Mac (or go red and yellow and have a Big Mac... Sorry, that was bad blink.gif)

Mine was the first with the orange LED around the volume pot. I have never liked blue, it feels cold to me and seeing as I listen mostly in the dark the warm glow is very relaxing I find!

There is another fail safe feature that I found out about a few weeks ago. You must not let the battery drain completely as it shortens the life greatly so he has built in a circuit that cuts power if you allow it to go too low. I went to use my amp and nothing worked so I plugged it in and all was well.

I wrote to him with the issue and he explained that he has set this to cut out before the battery gets so low as to damage it. So if one day you go to use your amp and have no power that is probably the reason.

With the way I listen I have just made it a habit to charge mine every other day.. Oh and make sure your near the amp when charging as you must not overcharge it either, once the green light comes on the charger then unplug it!


Oh, and as to the 06' he still is very much a one man band so i think that is why production is much slower. Remember he makes the cases by hand as well, no CAD or computerized cutting.

I have a feeling that he is going to have to take on at least another person as word spreads about his amps as I feel for the sonics offered they are somewhat of a bargain.. Thank goodness the tubes used were the stock in trade of the military for so many years and that there are probably millions in wear houses all over the world... Well, except Lorenz's wink.gif

On that note I have just ordered a set of 1943 Tung-Sol made RCA Mil Spec 3S4's so we shall see what they sound like, they are the oldest tubes I have used.. Amazing to think something made 70 years ago is just about to be used for the first time!
Edited by ianmedium - 6/12/13 at 8:21am
post #367 of 3704

If any of you guys are interested in purchasing a pair of the RCA 3S4 Military Specification tubes ianmedium refers to above (in post 366) here's a link -

 

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=200783152678&clk_rvr_id=489931940049

 

As of 17:00 GMT on 06/12/2013 there are 6 tubes available.

 

Cheers,

Andy. 

post #368 of 3704
Thanks Andy, I was rushing about after that post and meant to put the link in but you beat me to it.

I noticed on the box these are Tung-Sol, branded with the RCA label
post #369 of 3704
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Edited by seeteeyou - 11/4/14 at 11:20pm
post #370 of 3704

AnakChan,

 

What headphones did you use in your ASP amps.  I see photos with the Ultrasone Sig DJs, but was curious if you challenged the load of these two.  Maybe an Audeze or HiFiMan?

 

Also, being in the US, I'm curious what stumbling blocks I'll run into charging one of these beauties?

post #371 of 3704
Sometimes something is that simple that i don't think of it.

I have just sent an email to the itt schaub lorenz deutschland gmbh customer support to ask
- if they have lorenz df91 to sell
- i would need about 20 of them (urgent)
- if they know a source for
- have produced the same tube with / for other labels / companies.
Edited by GermanGuy - 6/12/13 at 1:28pm
post #372 of 3704
Quote:
Originally Posted by ButtUglyJeff View Post

AnakChan,

What headphones did you use in your ASP amps.  I see photos with the Ultrasone Sig DJs, but was curious if you challenged the load of these two.  Maybe an Audeze or HiFiMan?

Also, being in the US, I'm curious what stumbling blocks I'll run into charging one of these beauties?

I know he used the top of the line Fostex TH900 with the 05.

I owned the Audeze LCD2 with my 05 and it drove them with ease.

Looking at the specs of the HE-6 they should have no trouble driving them spec-wise but that does not mean it may or may not be a good match. The 05 goes up to 200ohm


These are the specs for the 06'


Tube
1U4(1T4)
Drive method
Pure Class A Non NFB SEPP
Output Power
max 100+100 [mW]
Output Impedance
8~200 [ohm]
Freq response
20~220k [Hz] at-6dB
Size
W140 D100 H34 [mm]
Weight
490 [g]
Power source
18650*2 + spetial charger
Battery life time
15h


And these are for the 05'

Tube
1U4(1T4) + 3S4
Drive method
Single Pure Class A
Output Power
40+40 [mW]
Output Impedance
8-32(Low) 16-64(Mid) 32-200(High) [ohm]
Freq response
30~30,000 [Hz] at-6dB
Size
W130 H44 D180 [mm]
Weight
1 [kg]
Power source
18650 Li-ion Battry and 12V Special charger

The charger is a funky little thing!

He has adapted a light socket charger for use with mains electricity. It looks funky as I say but I have had no issues with it. Just make sure you tell him which country it is going to be used in and he will fit the appropriate plug/transformer.

I will just snap a picture of it so you can see!
post #373 of 3704
Here is the charger supplied to me in Canada..

AppleMark
post #374 of 3704
Quote:
Originally Posted by GermanGuy View Post

Sometimes something is that simple that i don't think of it.

I have just sent an email to the itt schaub lorenz deutschland gmbh customer support to ask
- if they have lorenz df91 to sell
- i would need about 20 of them (urgent)
- if they know a source for
- have produced the same tube with / for other labels / companies.


Oh that is great! Lets see if they have some gathering dust in some dark corner of a wear house somewhere as I think this type of tube ceased being manufactured some time in the late 1960's

Thank you so much for all the time and effort you are going to to source us some great tubes!
post #375 of 3704

Usually the hotter and brighter the glow the shorter the lifespan of the valve? Basically like light bulbs. Also I believe using transformer coupled out maintained the frequency range better than other methods like capacitors and resistors, at a cost of dynamics, or something to that effect, it has significant advantages if you can appreciate them.

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