JDS Labs C5/C5D (pg96) portable amp/amp+DAC
Feb 8, 2013 at 6:31 PM Post #91 of 3,417
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Features and specifications will be posted with the preorder announcement. We'll leave subjective reviews up to you guys.
 
Channel balance is the amount of error between the left and right output signals (i.e., does one side sound much louder than the other?). Any amplifier which relies on an analog potentiometer will exhibit some degree of channel imbalance at the lowest threshold of knob rotation. That imbalance can be severe until you turn the knob past the imbalanced region, usually the first 10-20% of knob rotation.
 
Analog potentiometers are low cost and perform well--as long as you listen at volumes above the imbalanced region. Implementing a digital volume control without degrading THD+N is a challenge. Done right, it's worth the expense.

 
OMG I'm not CRAZY!!!!  (well just maybe...)  I ALWAYS notice that with almost every device I have ever used.  Some better than others, but I didn't know if it was my headphones being louder in one driver or something.  So it's the channel balance of the amp!  And this is better than the 02 in that regard?
 
Overall, I really think I'm leaning towards this as my next amp.
 
Feb 8, 2013 at 6:32 PM Post #92 of 3,417
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I agree this would be the ideal option.

 
Triple agree.  I hate when you want that bass right in between... But I think he tweaked it to +6db or so?  That's better, since you will probably use it on songs they "need" more bass, and therefor +3 "might" not be enough.  I'd rather have +3/+6, but +6 is better than +8.
 
I'm curious if anyone can say exactly "how" much better the 02 is in clarity/quality?  With something like the Senn HD600 for instance, would the 02 be like "wow, i didn't hear that on the c5" or more like "ok, ok, there's a little more clarity, but nothing major..."  ???
 
Feb 9, 2013 at 2:18 AM Post #93 of 3,417
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Quote:
I agree this would be the ideal option.

 
Triple agree.  I hate when you want that bass right in between... But I think he tweaked it to +6db or so?  That's better, since you will probably use it on songs they "need" more bass, and therefor +3 "might" not be enough.  I'd rather have +3/+6, but +6 is better than +8.
 
I'm curious if anyone can say exactly "how" much better the 02 is in clarity/quality?  With something like the Senn HD600 for instance, would the 02 be like "wow, i didn't hear that on the c5" or more like "ok, ok, there's a little more clarity, but nothing major..."  ???

The O2 was designed to be sonically transparent to the human ear, meaning it doesn't exist sonically in an audio rig. The designer of the O2 has an article on his blog about this, but it is illegal to post a link on Head-Fi. If there are sonic differences between the C5 and the O2, it very well could be due to a colouration of the C5, in which objective measurements could probably point this out. How much colouration and whether or not it subjectively "sounds good" is a reason why synergy is often discussed for audio equipment.
 
Since the C5 isn't released yet, it is hard to say how much of a difference the C5 sounds compared to an O2.
 
Feb 9, 2013 at 3:36 AM Post #94 of 3,417
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The O2 was designed to be sonically transparent to the human ear, meaning it doesn't exist sonically in an audio rig. The designer of the O2 has an article on his blog about this, but it is illegal to post a link on Head-Fi. If there are sonic differences between the C5 and the O2, it very well could be due to a colouration of the C5, in which objective measurements could probably point this out. How much colouration and whether or not it subjectively "sounds good" is a reason why synergy is often discussed for audio equipment.

Since the C5 isn't released yet, it is hard to say how much of a difference the C5 sounds compared to an O2.


Illegal? To link to just his blog or any blog? Is it because he was banned or something?
 
Feb 9, 2013 at 3:49 AM Post #95 of 3,417
Just his blog as he was banned, I think it's a bit silly really as it was a while ago, but still.
 
Feb 9, 2013 at 2:18 PM Post #96 of 3,417
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Just his blog as he was banned, I think it's a bit silly really as it was a while ago, but still.

 
Wait, so if I want to tell someone about his amp, I can't put a link to his page here?  That seems a bit ridiculous a thing to be "illegal"...  Don't mean to stir up an old issue, but his site has some good information on how we hear things and subjective/objective hearing articles.  What is the difference if I tell someone "go to google and look up his subjective hearing article" or if I just past a link to his article?  It doesn't stop anyone from getting to his page, it just makes it more tedious.  Just my thoughts. :-o  I thought this forum was for audiophiles to share information about audio and headphones, etc? :)  I would hope anything that helps that cause would be allowed...  Even if the user isn't.
 
Feb 9, 2013 at 3:45 PM Post #97 of 3,417
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No, I just don't want to be involved in a "black friday" event where everyone stomp over each other for a couple of available units.
FiiO did that with the E12, so I just skipped the E12.
If JDS does the same than I'll just move on to the headstage arrow and wait until there's plenty of C5 in stock.

 
We have 1000+ cases in stock, and we're building enough C5 boards to get through March. That's adequate time to adjust production based on actual demand.
 
Feb 9, 2013 at 4:22 PM Post #98 of 3,417
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No, I just don't want to be involved in a "black friday" event where everyone stomp over each other for a couple of available units.
FiiO did that with the E12, so I just skipped the E12.
If JDS does the same than I'll just move on to the headstage arrow and wait until there's plenty of C5 in stock.

Huh? There are still E12s available through the Micca store. I don't see anyone stumbling/stomping/falling over each other to buy them.
 
Feb 9, 2013 at 4:34 PM Post #100 of 3,417
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We have 1000+ cases in stock, and we're building enough C5 boards to get through March. That's adequate time to adjust production based on actual demand.

Thanks, I just bought a HE-400 so I hope this amp pairs well with it.
 
Feb 11, 2013 at 3:49 AM Post #102 of 3,417
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We have 1000+ cases in stock, and we're building enough C5 boards to get through March. That's adequate time to adjust production based on actual demand.

 
Nice. Hope to see the spec soon.
 
Feb 12, 2013 at 7:29 AM Post #104 of 3,417
From the pictures it looks quite a bit smaller
 
Feb 12, 2013 at 8:07 AM Post #105 of 3,417
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From the pictures it looks quite a bit smaller

 
Yes, exactly! Ence my question and I just want John to confirm that to us all, since he stated he has the final cases ready... 
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