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Audio-gd Reference 1 DAC (56 K warning) - Page 12

post #166 of 2415
Quote:
Originally Posted by Voltron View Post
One such circumstance is that you have many posts (163 with the word Compass in it), as well as blog entries, tester groups, and lots of audio-gd involvement.
Given that Currawong was the person who initially approached Kingwa with the idea of designing the Compass, and helped in designing, it is not really surprising that he would have a lot of posts on the subject. In fact, given that Currawong's Compass thread has almost 5000 posts, 163 posts seems seems surprisingly low. All IMHO, of course.
post #167 of 2415
Voltron: Fair enough, but I deleted my rant within a couple of minutes of posting it (and considerably before you posted a reply), as it was idiotic and written in anger, so please consider it retracted. Yes, I have a lot of posts...about the products I have owned, used or tried. You might try the same search for "Stax", (112 posts), Denon (95 posts), Lavry (60 posts), Northstar (58 posts), Macbook (58 posts), K701 (58 posts). Those wouldn't count threads that mention them where I've posted on them without those keywords coming up in the post.

sandchak: Shilling isn't tolerated in China either from what I can gather.
post #168 of 2415
Thread Starter 
Quote:
Originally Posted by Drosera View Post
Even if jitter problems get completely resolved by the DSP-1 (and there are many forms of jitter, some of which can't be solved by realigning the data stream), that still does not completely do away with the need of a good transport (or even cables). Kingwa doesn't seem to claim that either, to quote the Reference One page:



So, basically, the differences between a cheapo transport and a proper hi-end one are smaller, but certainly not zero. After all, the main job of a transport is getting all the bits read properly, which is not an easy task to begin with. (I can tell you from my experience that most budget dvd-players have considerable difficulties doing even that.) Let alone phase jitter, etc.

And I presume that a good cable does more than just minimizing clock-related jitter too, preventing general signal degredation, for instance.

So, no, I firmly believe that both transport and digital coax cable are still components where quality matters, even if connected to the DSP-1. It's just that the need for them is considerably less pressing.

I have a number of transports to test the theory but in effect I lean towards your view and believe a good transport and cable are essential pieces of the puzzle.

In any event the RE1 continues to impress.

Peete.
post #169 of 2415
Quote:
Originally Posted by Voltron View Post
I got it from a lot of posts, several people's signatures, and from here: Head-Fi: Covering Headphones, Earphones and Portable Audio - Audio-gd Compass "Tester's" group
Quote:
Originally Posted by Voltron View Post
Putting it dead straight would involve the various "testers" of goods saying that they paid list prices for the units that they are posting about so vociferously. Did you guys pay full price for all audio-gd products you possess?
All of the first 18 testers did pay in full, there was no bribery involved in making us post about audio-gd whatsoever. If you do a search for me and compass you'll see I have never advertised/recommended/praised it outside of the audio-gd product threads. I have only mentioned it every now and then in other threads to let people know what gear I used to test equipment with. I have seen some people excessively promote the compass outside the compass thread which I disapprove of, but they're just a couple of people and it's not fair to generalize all compass owners that way.

If you're suspicious about a discount because of the few posts in the compass thread talking about a mysterious thing Kingwa offered to the prototype users, it was not a discount in the compass, it was just an offer to remedy the fact that we were getting prototypes rather than the final compass. And it has no bearing on how the first 18 users would've posted on the compass' performance itself. But please don't ask us what the offer was because we were asked not to, but it's a fair and just offer to make us for having prototypes and we would mention it if we could.

In fact I haven't heard any of the initial testers seriously bemoan about the fact that they don't have preamp out, the lower 9dB gain setting, bright setting, or new faceplates. Most likely because of how grateful we are to own such a great device.
post #170 of 2415
Quote:
Originally Posted by Pricklely Peete View Post
I have a number of transports to test the theory but in effect I lean towards your view and believe a good transport and cable are essential pieces of the puzzle.

In any event the RE1 continues to impress.

Peete.
The DSP-1 must certainly be doing a lot of things really right. Because, even though I feed my Reference One with a rather lowly transport that can't possibly be "jitter-free", the sound quality that I get from the Reference One excels in things I know to be extremely jitter-sensitive, such as painting a convincing acoustic and reproducing complex higher harmonics.
post #171 of 2415
Thread Starter 
Quote:
Originally Posted by Drosera View Post
The DSP-1 must certainly be doing a lot of things really right. Because, even though I feed my Reference One with a rather lowly transport that can't possibly be "jitter-free", the sound quality that I get from the Reference One excels in things I know to be extremely jitter-sensitive, such as painting a convincing acoustic and reproducing complex higher harmonics.
Again Dro it's easy to agree with your logic. Absolutely something is going on with it that does seem to mitigate some of the drawbacks of transport/cable induced timing/phase error. The real question is to what degree is the DSP1 responsible for this negation ?

I'm at the 540 hour mark with my RE1 and have noticed a positive change in the sound stage presentation. It has deepened and refined, images come forward of the plane of L/R speakers whereas before the vocalist would hover just behind that plane (in the middle or slightly L or R depending on the mix). Height and width have expanded beyond the borders of the speakers to a considerable degree.

Peete.
post #172 of 2415
Could anyone compare a Ref1 using a cd transport as source to a usb to spdif converter as source? Particularly could you listen for whether either source gives longer or shorter decay when playing through the Ref1? Do notes sound crisper on one versus the other? Thanks.
post #173 of 2415
Thread Starter 
I don't have a SPDIF/USB converter so no go with that on my setup. Sorry Mik.

Peete.
post #174 of 2415
Ive just followed the recent rapartie on this thread addressing concerns over potential conflicts of interest when members review gear.

I think this a a fair debate but would like to request that considering the delicate nature of such a topic, that the language used is rather more respectful of each other on all sides.

Im very appreciative of those who have posted their finding on this forum. As a beginner in this field it can be very confusing trying to work out what gear to buy. As well the rarity of the gear means that I for one, cant audition it before buying. I find professional reviews are often scant and sometimes of questionable objectivity. That leaves me with forums like this that I find very useful. Being able to get multiple opinions form different users with different musical tastes, different systems and different power grids might be the most trustworthy data base possible.

I think its therefore important to encourage more members to post. Some members are upfront about there involvement with a company - one thread started with the reviewer stating he had requested a review model to trial and after it was sent back. Perhaps if members routinely declared their interests in the company e.g. review model on loan, purchased with no mention of doing a review, full cost purchase etc it would help with the transparency of the process.

Please keep those reviews coming.
post #175 of 2415
The DAC seems to use an Altera Cyclone II FPGA. Anyone have details on this?
post #176 of 2415
Quote:
Originally Posted by rds View Post
The DAC seems to use an Altera Cyclone II FPGA. Anyone have details on this?
Only what Google revealed to me, which was the product page. Seems to be a programmable digital signal processor.
post #177 of 2415
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post #178 of 2415
Quote:
Originally Posted by Currawong View Post
Only what Google revealed to me, which was the product page. Seems to be a programmable digital signal processor.
It's definitely an fpga that can be used as part of a dsp. I have used this fpga quite a bit myself. I'm justing wondering what type of dsp is being implemented in this dac.
Maybe it is being used to control the dac settings? I'd be surprised that a high end dac would use dsp.
post #179 of 2415
Quote:
Originally Posted by rds View Post
It's definitely an fpga that can be used as part of a dsp. I have used this fpga quite a bit myself. I'm justing wondering what type of dsp is being implemented in this dac.
Maybe it is being used to control the dac settings? I'd be surprised that a high end dac would use dsp.
You have seen this I suppose. It gives at least some idea of what the DSP does. Although admittedly I think a more elaborate manual is called for.

post #180 of 2415
Thread Starter 
Dro how's it going with your RE1 ? Any more impressions to share ?

Peete.
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