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Teradak Teralink-X2 released 19.1.10 - Page 2

post #16 of 642
Hello thoppa

I'm very interested on the power supply you will build for your teradak, please tell us your plans, i have a teralink usb and have been searching for a power supply for it.
post #17 of 642
Thread Starter 
Hi,

I already have a sigma11 from AMB set for 12.00V so I'll try that first. I also have a spare Paul Hynes PR3 psu I'll try.

However, this is digital and will require very good performance far above the audio bandwidth, so I'm also thinking about building a linear psu based on an LT1084 regulator circuit using Sanyo Oscon caps ( low esr at high frequencies ) and using 2 double-bobbin isolation transformers to filter common mode noise from the mains and also ac noise from the DC output.
post #18 of 642
Quote:
Originally Posted by JulioCat2 View Post
Hello thoppa

I'm very interested on the power supply you will build for your teradak, please tell us your plans, i have a teralink usb and have been searching for a power supply for it.
FYI, I haven't experienced any change in sound feeding my Teralink an external power supply and I don't think that the fact it's generic tells something.
post #19 of 642
Quote:
Originally Posted by yossi126 View Post
FYI, I haven't experienced any change in sound feeding my Teralink an external power supply and I don't think that the fact it's generic tells something.
Are you using SMPS's?
post #20 of 642
Quote:
Originally Posted by regal View Post
Are you using SMPS's?
No. I'm using regular 12V.
post #21 of 642
Hallo,
im waiting for X2 arrival to
And im very interested in PSU for it, because some users of teralink X have reported about improvement in SQ with external PSU.
I found something like this on the net Super Star - Linear Adaptor,S-1000F - Golden Edge Group Limited - Manufacturer
but i would like to wait till Thoppa build some good PSU and show us how to do it

best regars,
Mantas
post #22 of 642
Definitely looking forward to your results
post #23 of 642
is this async or ?
post #24 of 642
I've been using the Teralink-X2 for a few hours now (got it earlier today). Initial impressions are positive. I'm using it with an external linear regulated PSU for anyone wondering. More to come later after preliminary burn-in.
post #25 of 642
Good news!
What psu do you use?
post #26 of 642
Quote:
Originally Posted by Mr.Mantas View Post
Good news!
What psu do you use?
I'm using a regular plug-in linear regulator. I had it in storage from another device. (regal helped me with some PSU recommendations/info).

As for the sound, the first hour was really a disappointment considering all that had been said about the Teralink-X, but after burn-in the transformation was astounding. Switching back and forth from my motherboard coax-out and the Teralink-X2's, the difference was not at all subtle. I have to say, slim.a's description of the Teralink-X applies here and he just nailed it in his review. The soundstaging is definitely the biggest improvement. The sound is wetter, more holographic and the imaging is precise yet its representation in space is very large. The next thing I noticed in terms of improvements was a smoother, more natural treble that isn't in your face as it was before through the USB input of the y2 and the coaxial output of my motherboard. Lastly, I think the bass detail has improved noticeably over the other 2 solutions, but the quantity of the bass has decreased. The lack of bass quantity is the only weakness I have found so far, but it isn't absent to the extent of sounding sterile. I think the Teralink-X2 might be adding a touch of warmth to the sound, but it's not close to the bass region, but rather near the lower midrange.

I'll report back later after I get some more listening time.
post #27 of 642
I'm hoping someone who has the Teralink X(version 1) and the Teralink X2 can post a comment comparing the two units.

I actually own the Teralink (version 1 with regular crystal oscillator) and also the Valab 1ppm crystal version. The regular version comes in a smaller case and the 1ppm crystal version has a larger case.
To my ears the 1ppm version sounds the better of the two.

Perhaps I will have to buy one OF THE X2 and then write the review? But I'm hoping someone else already has the units to compare.

Something I think that seems to have been forgotten on other threads on this topic, is that there were two different versions of the Teralink X (the regular and the 1ppm crystal versions) Perhaps people could mention which version they have when writing a review. (me included - Doh!)
post #28 of 642
Quote:
Originally Posted by Shahrose View Post
I'm using a regular plug-in linear regulator. I had it in storage from another device. (regal helped me with some PSU recommendations/info).

As for the sound, the first hour was really a disappointment considering all that had been said about the Teralink-X, but after burn-in the transformation was astounding. Switching back and forth from my motherboard coax-out and the Teralink-X2's, the difference was not at all subtle. I have to say, slim.a's description of the Teralink-X applies here and he just nailed it in his review. The soundstaging is definitely the biggest improvement. The sound is wetter, more holographic and the imaging is precise yet its representation in space is very large. The next thing I noticed in terms of improvements was a smoother, more natural treble that isn't in your face as it was before through the USB input of the y2 and the coaxial output of my motherboard. Lastly, I think the bass detail has improved noticeably over the other 2 solutions, but the quantity of the bass has decreased. The lack of bass quantity is the only weakness I have found so far, but it isn't absent to the extent of sounding sterile. I think the Teralink-X2 might be adding a touch of warmth to the sound, but it's not close to the bass region, but rather near the lower midrange.

I'll report back later after I get some more listening time.
Since the Teralink-x2 uses pretty much the same components as the Teralink-x (1ppm clock) I have except for the usb chip, I would expect its sound to change noticeably during the first week of use. By the way, I didn't notice much change (burn-in) on the other converters I have so I am guessing it is either the clock or the capacitors that take a long time to settle in.

As for the bass, I found the bass of the Teralink-x very good (superior to that of the Musiland 01 usd and emu 0404 usb but not as good as the hiface) but I was using the Wireworld ultraviolet usb cable for my tests.
I am surprised that it wasnt better than your motherboard coaxial output. Did it change with burn-in?

It is intersting that you found out that the Teralink-X2 is on the warmer side of neutral (like the Teralink-X). It might be the sonic signature of the 1ppm clock and the capacitors being used ... (just a guess).
post #29 of 642
Quote:
Originally Posted by slim.a View Post
Since the Teralink-x2 uses pretty much the same components as the Teralink-x (1ppm clock) I have except for the usb chip, I would expect its sound to change noticeably during the first week of use. By the way, I didn't notice much change (burn-in) on the other converters I have so I am guessing it is either the clock or the capacitors that take a long time to settle in.

As for the bass, I found the bass of the Teralink-x very good (superior to that of the Musiland 01 usd and emu 0404 usb but not as good as the hiface) but I was using the Wireworld ultraviolet usb cable for my tests.
I am surprised that it wasnt better than your motherboard coaxial output. Did it change with burn-in?

It is intersting that you found out that the Teralink-X2 is on the warmer side of neutral (like the Teralink-X). It might be the sonic signature of the 1ppm clock and the capacitors being used ... (just a guess).
It's still premature for me to say more. I've been testing with 3 headphones: HD800, HE-5, and HD650 so it will take some time to get the sound down. I also think it may need more burn-in as it still seems to be changing.
post #30 of 642
Thread Starter 
Hi,

I just got mine today.

It installed as Teradak 96K usb audio. I can't get kernel streaming to work - Win XP SP3, Foobar v0.9.6.9. - says it is ks usb audio but won't stream data. It allows 16, 24 and 32 bit settings but none work and 32 bit gets an error message. KS works with my laptop Realtek chip but not with the Teradak.

So, I'm using asio4all. This says it is 8-96K 24 bits. There doesn't appear to be any way to control this device. I really hope Teradak come out with their own asio driver as promised.

In the properties box in windows, it says it also has a line in and an spdif in but there's no hardware to support this afaics. There is a solder point on the board for spdif in so maybe that'll be worth investigating for anyone so inclined.

I'm gonna leave mine to burn in for a week and then see how it is. My first impression is that I hope it improves, but then that's always true eh !

The regulator near the usb is dropping 5v down to 3.3V but I think this is just for Tenor chip.

The unit arrived in bubble wrap with nothing else, not even a box.

EDIT : Just checked the voltage drops over the LT1084 with a 9v supply. Pins 1 and 2 have 1.244V (adj to out), Pins 1 and 3 are 5.2V (adj to in), and pins 2 and 3 are 3.98V (out to in). I can see two resistors connected to the left of the reg = 300 and 100. So it seems that the ref voltage of 1.244 is multiplied by 300+100/100=4 to give a 5 volt output. The datasheet says the dropout is less than 1.5V so really it should be possible to feed this device anything above 6.5V regulated and it'll work quite happily.

I checked the underside and there's just a few resistors.

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