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Aune T1 USB Tube DAC+ SS Amp Discussion Thread ***See first post for FAQ--Updated on 02/14/15*** - Page 364

post #5446 of 8012

Finally I'm able to setup my Aune T1 for my office use. Initially, the sound from the headphone output sounded very microphobic. Initially I thought it was the Win7 driver issue. After one by one problem isolation, I found the real culprit. It was the 6.3mm-3.5mm adapter. After replacing it, the sound is normal again. However, I found another problem today. After playing a SACD source using JRiver MC19, playing a normal CD-quality audio, the sound has some cracking noise. To resolve this, I have to power off and on my T1 to make it normal again.

 

I wonder anyone else has encountered this problem before and how to resolve this problem permanently, if any?

post #5447 of 8012

I finally got my amp together and working. I've been waiting for the parts for about 2 months now. The little T1 is only used as a DAC now. I'm using two Siemens E88CC tubes in my amp for now until I can verify that the amp is working properly. But everything seems to be fine for now after 1 hour of testing. The sound is incredible. I just got a tiny little bit of hum on the right channel but I think I can fix that.

 

I can't wait to use my Valvo or Philips Miniwatt SQ tubes in this amp. 

 

post #5448 of 8012
Nice, what is that? A Millet?
post #5449 of 8012
Quote:
Originally Posted by MrEleventy View Post

Nice, what is that? A Millet?

 

Thanks. No, it is based on this design here: http://diyaudioprojects.com/Tubes/6DJ8-Tube-Headphone-Amp/

 

I just made some slight modifications to the power supply. For example the heater voltage on my unit is variable (I set it to 6,3V) instead of a fixed 6V. Technically I could change it to 7V and use PCC88 tubes without any problem. But I'm fine with my E88CC tubes. :beyersmile:

post #5450 of 8012
Quote:
Originally Posted by teb1013 View Post


I have the Siemans E88CC Gold. It is a fine, very musical tube. In my opinion not quite up to the Amperex 7308, which remains my go to tube. The Voskhod is, very well suited for rock, a bit too "in your face" for classical, which constitutes a good deal of my listening.

+1 exactly my impressions of those tubes... I've kept an Amperex 7308 PQ in my Aune for the last 5 weeks or so, but swap in the Siemens every once in a while.

 

What kind of headphones are you listening with? I use HD-650's, but I was considering perhaps trying some Audeze... The Sennheisers are very nice especially with mids, but I sometimes want to hear more of the highs. (I'm considering trying out LCD 2.2's... heard the bass goes a bit deeper, and the presentation of the highs is more extended).

post #5451 of 8012

A nice suggestion for everyone to try and let me know what you think... (in light of the new Aune T1 MK2)

 

I never believed that jitter was an issue until researching into it recently. Basically, I was extremely skeptical that jitter would actually affect my DACs, since I never heard any pops/cracks/fizzles/distortion. Well, what I read was that you don't actually ever hear "jitter", but you will actually hear an improvement if you reduce jitter. I guess this might sound stupid, but I decided to try a test and see if I could hear any difference.

 

Normally, I play most of my FLAC files off a portable hard drive, which is connected through a USB 2 port... I decided to load my files into my laptops RAM instead and play them directly from there. My laptop also has a solid state drive, but the RAM is much faster for reading from. I loaded a foobar plugin called "foo_ramdisk" which allows for the files to be temporarily loaded into RAM and fed over to the Aune T1.

 

I have to say that I actually do think the sound is improved... it sounds slightly more detailed and clear to me, and perhaps a little less muddled (not that I found it muddled to begin with). Could I tell the difference doing a blind test? Probably not... maybe it's a placebo effect! 

 

I did like the plugin enough to install a program which creates a permanent RAM disk... you basically tell it how much memory to allocate to a dedicated drive.

 

This is making me think that the new T1 may actually sound better, even with the same components, as it is supposed to reduce jitter through an asynchronous implementation.

 

I'd love to hear some opinions and for some people to call me out :P

post #5452 of 8012

Hi everybody, I need help desperately. I just bought my AUNE T1 to use it with my iMac with OSX Mavericks according to everything I've read, it should be recognized automatically by the computer but it is not, I tried changing the usb port, restarting both the computer and the T1, and nothing seems to work, does anyone know a way to make it work? Please help!

 

Thank you!

 

Leo

post #5453 of 8012
Quote:
Originally Posted by mikoss View Post
 

I have to say that I actually do think the sound is improved... it sounds slightly more detailed and clear to me, and perhaps a little less muddled (not that I found it muddled to begin with). Could I tell the difference doing a blind test? Probably not... maybe it's a placebo effect! 

 

Mh I must say I find that hard to believe. Usually the driver or playback software will create a buffer of some sort to ensure the DAC will be fed continuously with data. I had another DAC with ASIO drivers and constantly had issues with it because it did not feed the DAC well.
But I think if playing the audio files from RAM really ensures a more continuous flow of data towards the DAC, I still don't see how this could make the sound clearer. It would only remove audible jitter-caused noise or split-second silent parts  (and I know from broken FLAC files that even 1/1000s silence is very, very audible so you'd hear that definitely).

So you will probably imagine to really hear a difference there. And changing tubes or headphones will surely change/improve the sound much more ;)

 

However I'd also love to hear a MK1 vs. MK2 comparison. Six weeks ago when I ordered my MK1, the MK2 (230V) was nowhere for sale. Now I've seen it on Amazon.co.uk... damn...

post #5454 of 8012

This is pretty random but I am using my T1 as a DAC for my 2.1 setup. I have a Polk PWS505 (300 watt 12in subwoofer), is the vibration coming from the sub going to damage the T1 in anyway?

post #5455 of 8012
Quote:
Originally Posted by JakeMcCarthy94 View Post
 

This is pretty random but I am using my T1 as a DAC for my 2.1 setup. I have a Polk PWS505 (300 watt 12in subwoofer), is the vibration coming from the sub going to damage the T1 in anyway?

http://www.upscaleaudio.com/tube-faq/

 

According to the last paragraph, external vibrations could be picked up by the tube and influence the sound. And maybe if you place the T1 right on top of your subwoofer the tube could be shaken as badly as if you would tap on it. Maybe I'm not an expert but just came across this article yesterday.

post #5456 of 8012
Quote:
Originally Posted by leocuellar View Post
 

Hi everybody, I need help desperately. I just bought my AUNE T1 to use it with my iMac with OSX Mavericks according to everything I've read, it should be recognized automatically by the computer but it is not, I tried changing the usb port, restarting both the computer and the T1, and nothing seems to work, does anyone know a way to make it work? Please help!

 

Thank you!

 

Leo

 

 

Have you option click on the speaker logo on finder bar and choose Aune T1 as output device?


Edited by inouekun - 6/24/14 at 1:52am
post #5457 of 8012

I am looking to buy one for use with my dt700 250 ohm. I cannot figure out if this is the latest, MK 2, version or not: http://www.amazon.com/gp/product/B00A2QJMRY

post #5458 of 8012
Quote:
Originally Posted by scociu View Post
 

I am looking to buy one for use with my dt700 250 ohm. I cannot figure out if this is the latest, MK 2, version or not: http://www.amazon.com/gp/product/B00A2QJMRY

That would be the original version, upgrade edition (comes with a 6922 EH tube), NOT the mark 2. 

 

(The mark 2 will state the USB receiver as SA-9027)

 

From Amazon:

Item model number: T1

 

Product Description

This is the best selling 2013 T1 24BIT TUBE USB DAC w/Upgraded EH 6922 Tube! 

post #5459 of 8012
Quote:
Originally Posted by leocuellar View Post
 

Hi everybody, I need help desperately. I just bought my AUNE T1 to use it with my iMac with OSX Mavericks according to everything I've read, it should be recognized automatically by the computer but it is not, I tried changing the usb port, restarting both the computer and the T1, and nothing seems to work, does anyone know a way to make it work? Please help!

 

Thank you!

 

Leo

Hi Leo,


 

I just got my Aune T1 MK2 and experienced the same problem you are describing. I don't have a Mac, I have a Linux computer with openSUSE and Audacious.

I restarted my pc several times and there had been a change but unfortunately resulting in an error message.


 

I could solve the problem by connecting to an USB Hub with external power supply. Immediately the Aune had been recognized. Maybe you could try an external USB Hub. There may be an issue with the USB cable and Mac computers because I received a message asking whether I had trouble with my Aune or not.


Good luck!

post #5460 of 8012
Quote:
 

I just got my Aune T1 MK2 and experienced the same problem you are describing. I don't have a Mac, I have a Linux computer with openSUSE and Audacious.

I restarted my pc several times and there had been a change but unfortunately resulting in an error message.


 

I could solve the problem by connecting to an USB Hub with external power supply. Immediately the Aune had been recognized. Maybe you could try an external USB Hub. There may be an issue with the USB cable and Mac computers because I received a message asking whether I had trouble with my Aune or not.


Good luck!

 

 

Yes, you're right, I tried the same yesterday and it worked, I sent an email to aune's support account and they are trying to send me something by email I don`t know what it is but it is too big my gmail account couldn't receive it, so they asked me to give them another email account which can receive bigger files, I don't have an idea what are they trying to send me, maybe an app or driver for macOX?? I will see if I can receive the file with my other email account (work) and hopefully in that email is the solution to the problem... I will keep you posted.

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