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The Altmann Tera-Player - Thread - Page 33

post #481 of 2244
Quote:
Originally Posted by mboerma View Post


No real recommendations. I use mostly Sandisk, but any class 10 works for me. I just convert the WAV files to 16 bit to save space and no longer have the issue of the Tera not being able to fill the buffer. BTW I don't think the size of the buffer has much to do with it, it is the access speed to the card needed to fill the buffer. You see the blue led blinking every time it reads the card. The more high res a WAV file is the more often it blinks. If the buffer is larger it will blink less often.

I've not experienced the Tera having to play catch up, even playing rather large files converted from DSD tracks, though it would be very nice if I could have my Tera upgraded with the extra RAM whatever it does. So in essence, there's no difference playing hi res 24-bit material and 16-bit CD quality stuff on the Tera?
post #482 of 2244
Quote:
Originally Posted by efftee View Post


Glad it worked out well for you. Are you planning to amp your Tera? I'm going hook it up to a Kojo and see if that will be worth the bulk and battery! Just wondering, is there any special instructions on amping the Tera, eg which jack, turning volume to max, etc? The fact that I find little to no difference amped and not is disconcerting.

 

I'm amping the Tera with a Fiio E6.

It was laying around and I wanted to be able to test more extensively with low impedance IEM's.

Read about the Fiio supposedly having a high input impedance which probably matches well with the Tera.

Wanted to upgrade the Fiio with the Pure II but in combination with the Tera for me didn't do much more then the Fiio.

Use it daily now with my GR10 and experimenting a little with interlinks (home set experience :-))
 

post #483 of 2244
Thread Starter 

Has anyone got the link for the Tera Player Rmma graphic conducted by Charles..

Would love to read it agin, just can't find it.

Thanks

post #484 of 2244
Quote:
Originally Posted by musicday View Post

Has anyone got the link for the Tera Player Rmma graphic conducted by Charles..
Would love to read it agin, just can't find it.
Thanks

I think I have it saved somewhere, I will l post it here if I still have it.
post #485 of 2244
Quote:
Originally Posted by musicday View Post
 

Has anyone got the link for the Tera Player Rmma graphic conducted by Charles..

Would love to read it agin, just can't find it.

 

Hmmm, what is it?

post #486 of 2244
Quote:
Originally Posted by efftee View Post


I've not experienced the Tera having to play catch up, even playing rather large files converted from DSD tracks, though it would be very nice if I could have my Tera upgraded with the extra RAM whatever it does. So in essence, there's no difference playing hi res 24-bit material and 16-bit CD quality stuff on the Tera?


Nope. No difference. 

post #487 of 2244
Quote:
Originally Posted by HiFlight View Post

I think I have it saved somewhere, I will l post it here if I still have it.

That post with photos etc has been removed by Charles as he was accused by some for falsifying the results shown on the o'scope screens. He was much offended by the accusations, needless to say.
post #488 of 2244
Quote:
Originally Posted by mboerma View Post
 


Nope. No difference. 

However 96k and especially 192k resolution often makes all the difference compared to 44k (I have listened on Tera to many CD's I have owned for years vs same albums purchased from HDTracks in higher resolutions and the difference is clear in majority of cases).

I also used to believe that bit depth was more important than resolution but after listening to Tera for couple of years I know from first hand experience this is not the case - because 192/16 on Tera sounds better to me than 192/24 on AK120 or 192/24 on HM-901.

post #489 of 2244

You're entitled to your opinion but the way to tell which is more important is to hear the formats on something that plays BOTH extremely well. This takes nothing away from the Tera's overall performance but it's also not the best DAC ever made for home use. Approaching that would give you a better indicator of bit depth vs frequency differences. My opinion of course but I'm familiar with the Altmann home DAC which shouldn't be worse as a line out. I think it's quite good and better than some highly regarded units but not best competition IMO. When you have a source that you already like a bit better with 16 bit material but prefer even more with 24 bit it's also not an absolute but perhaps a bit more telling.

 

In your scenario, if 16/96 isn't as good 24/48 on the 901, that wouldn't make your formats statement true even if you prefer both files played back on the Tera. It also wouldn't make it false. File format isn't the most important thing in audio but like so many aspects, can be a significant contributor when everything else lines up correctly, as you seem to notice from higher sample frequency alone.


Edited by goodvibes - 11/27/14 at 9:22am
post #490 of 2244
Quote:
Originally Posted by goodvibes View Post
 

You're entitled to your opinion but the way to tell which is more important is to hear the formats on something that plays BOTH extremely well. This takes nothing away from the Tera's overall performance but it's also not the best DAC ever made for home use. Approaching that would give you a better indicator of bit depth vs frequency differences. My opinion of course but I'm familiar with the Altmann home DAC which shouldn't be worse as a line out. I think it's quite good and better than some highly regarded units but not best competition IMO. When you have a source that you already like a bit better with 16 bit material but prefer even more with 24 bit it's also not an absolute but perhaps a bit more telling.

 

In your scenario, if 16/96 isn't as good 24/48 on the 901, that wouldn't make your formats statement true even if you prefer both files played back on the Tera. It also wouldn't make it false. File format isn't the most important thing in audio but like so many aspects, can be a significant contributor when everything else lines up correctly, as you seem to notice from higher sample frequency alone.

 

It's true I'm making my conclusions purely based on comparison of high end portable dacs (Tera, AK120 and HM-901). But those are top of the line portable DAC's so I still think there is something that can be learned from this (namely that 16 bit DAC can in fact outperform 24 bit DAC's so bit depth being most important for HD audio theory falls apart at least in this case - there are certainly other factors to consider, resolution being more important than some people want to believe).

I have no doubt that when it comes to much more expensive best of breed home systems this is most likely not true. But still, I have seen many statements by audiophile "gurus" about bit depth always being more important than resolution and at least in portable DAC arena that is not the case (at least to my ears). 

post #491 of 2244

Not at all. You just prefer the Tera with any format. It says nothing about which format is actually better. It's like saying that because I prefer a Hisound A3 playing 400cbr aac to a Clip playing FLAC, AAC must be better than FLAC. You're not solving for a big variable, your solution lacks a constant. I'm sure that there are plenty of great things to say about the Tera without nonlinear extrapolations.

post #492 of 2244
Quote:
Originally Posted by HiFlight View Post


That post with photos etc has been removed by Charles as he was accused by some for falsifying the results shown on the o'scope screens. He was much offended by the accusations, needless to say.

It did look like the Touch was defective but I don't for 1 minute think he doctored anything. Basically, it showed square waves that rang out of band (or worse, Ipod) on a clip and Ipod when the Tera had none. There was something wrong with the ipod square but he can only measure what's on hand. This was the link but has been removed. http://www.tera-player.com/Tera-Player_RMAA.html Perhaps t was discovered that the Ipod wasn't right. It looked neat but one measurement like that is only a very small portion of a tale. At a higher frequency, for instance, the Tera would round it's corners more than the other 2 due to starting to roll well before 20khz and there's things like output impedance, noise, etc. etc. I don't find any of those off putting either since the story is considerable greater than that as well. That it's so enjoyed by it's owners and has matched well to numerous earphones is much more important. Someone in that sort of market is willing to properly mate it. It doesn't have to be best with everything as long as perceived greatness can be achieved by those willing to pursue it.


Edited by goodvibes - 11/27/14 at 3:24pm
post #493 of 2244

These aren't entirely representative because they are into significant loads but it will give an idea.

Here's a clip+ :

Heres an Ipod touch 3 (I think it's pretty good sounding into higher impedances):

This looked much worse in that link even without a load and why I think his was defective.

 

The tera looked like a square without the wiggles and would probably only have shown a minor tilt in the horizontal lines with these loads. It looked about as good as it gets.


Edited by goodvibes - 11/27/14 at 4:06pm
post #494 of 2244

Here copy of  http://www.tera-player.com/Tera-Player_RMAA.html

 

 

 

 

 

 

 

 

 

 

 

 

post #495 of 2244

That's it. The Ipod square looks quite off and why my earlier statements. Perhaps it was in an EQ setting etc and missed when tested. None of us are perfect or familiar with every device. I certainly don't think Charles did anything intentional here since there was no need for what he was trying to show. You can see that the Tera rolls a bit in the top from the square and it's confirmed to be -3db down at 20 khz in the actual measurement. I don't feel it's that very important in headphones where it's difficult to know what sounds linear in the highs and since many have a peak up there anyway. People get too caught up in pictures and numbers. Even if you understand them, and I'm sure Charles does better than most, you may pick compromises that are different than others to achieve the result you seek. This is what an undithered 16 bit 1 khz sine wave looks like at 90db down from a similar setup. It's from a HM-602.

There's great debate on how much this matters sonically but 24 bit would 'look' significantly better. 

Not the Tera again but here's a 1k sine wave:

The tera will likely look similar but again, the aberrations represent out of band stuff just like those square waves. Folks like their 801s and 602s as well.:smile:

 

It's why I don't think lay folks should use specs as 'proof' of much. Whatever you point to as significant can probably be rebuked by pointing at something else. I've also heard things that look fab on paper that I wouldn't give the time of day. If you like the Tera or an Hm-801 etc, do so because it gives you goosebumps, not because of some silly graphs or because it doesn't need 24 bit to do so.:smile: 


Edited by goodvibes - 11/28/14 at 7:28pm
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