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New amp from JDS Labs - Page 2

post #16 of 54

jseaber says: "We’re aiming for release as soon as possible, which will be around July or August."

 

 

post #17 of 54

for 175$ this one should have a case of its own... right?

post #18 of 54

Great guys over there at JDS Labs. This looks like a quality piece of gear from them as usual. Can't wait for listening impressions to start showing up.

 

Jack

post #19 of 54
Quote:
Originally Posted by JamesMcProgger View Post

for 175$ this one should have a case of its own... right?



lol yeah it will.  If you look in their blog response, most likely black.  

post #20 of 54

Nice! Triple ground means that it will have separate ground per channel and 1 global ground. It guess the channel ground (noisy one) will be filtered to ensure the signal integrity.

Dual channels means it will use 2 completely separate channel (2 opamps).
 

Quote:
Originally Posted by ClieOS View Post

Triple ground, dual channels - that's a little out of my very limited understanding on EE. But cmoyBB is one of the most impressive cmoy I have ever heard and I am sure this one will be equally impressive. Looking forward for the day of release :)

 



 

post #21 of 54

How much power, I wonder?

post #22 of 54

Triple grounds would normally indicate separate grounds for each opamp channel. However, that's impossible without XLR connectors, as the ground of the L and R signals are joined in 1/8" and 1/4" stereo cables.

 

To clear up the non-standard terminology used in the blog article, C421 uses an active ground configuration. The innovation is in the power circuitry. We're using successive references in the power stage to accomplish two tasks:

 

1) Minimize noise

 

2) Allow the amplifier to be used while charging from USB

 

This information has been added to the announcement.

 

 

The first C421 prototype enclosure is scheduled to arrive in 5 days. It's a crude plastic model intended to verify fit, so we probably will not post pictures until the aluminum cases arrive.

 

Quote:
Originally Posted by Jazzyfi View Post

Nice! Triple ground means that it will have separate ground per channel and 1 global ground. It guess the channel ground (noisy one) will be filtered to ensure the signal integrity.

Dual channels means it will use 2 completely separate channel (2 opamps).
 



 

 

 

Plenty! C421 supplies 14V to the opamps. Not a power measurement, I know...

 

Quote:
Originally Posted by latenlazy View Post

How much power, I wonder?


 


 

 


Edited by jseaber - 6/15/11 at 6:00pm
Reply
post #23 of 54

for USD175 this amp naturally competes with leckerton uha-4, which comes with internal DAC. i hope the amp section of this new amp will be much better than uha4 to cover the disadvantage of internal DAC

post #24 of 54

Thanks for clarifying this. I thought you invented something new with separate grounds for each opamps ;). I'm really looking forward on your C421.
 

Quote:
Originally Posted by jseaber View Post

Triple grounds would normally indicate separate grounds for each opamp channel. However, that's impossible without XLR connectors, as the ground of the L and R signals are joined in 1/8" and 1/4" stereo cables.

 

To clear up the non-standard terminology used in the blog article, C421 uses an active ground configuration. The innovation is in the power circuitry. We're using successive references in the power stage to accomplish two tasks:

 

1) Minimize noise

 

2) Allow the amplifier to be used while charging from USB

 

This information has been added to the announcement.

 

 

The first C421 prototype enclosure is scheduled to arrive in 5 days. It's a crude plastic model intended to verify fit, so we probably will not post pictures until the aluminum cases arrive.

 

 

 

Plenty! C421 supplies 14V to the opamps. Not a power measurement, I know...

 


 


 

 



 

post #25 of 54

I'm glad to see other designers employing the "slim" topography in their new designs! Man ... can't tell you how pleased I was to move from the typical "brick" designs that I've used in the past to the Arrow amp that is my current go-to kit. What a difference in portability! 

 

If this is reasonably priced, I'll most likely get one to compare with the Arrow ... 

 

Looking good!

 

.j

post #26 of 54

I'm really wanting one of those CmoyBBs but am kinda strapped for cash, will get one soon though. Hopefully those modded ones that JDS is selling on eBay won't all be gone by the beginning of July

post #27 of 54

Is the active balanced ground similar to the Stepdance?

BTW, the CmoyBB is a great little amp with no noise at all with my ES3X.

I think I like it more than the Headsix.

post #28 of 54
Quote:
Originally Posted by gilency View Post

Is the active balanced ground similar to the Stepdance?

BTW, the CmoyBB is a great little amp with no noise at all with my ES3X.

I think I like it more than the Headsix.

It is active ground, not active balanced ground.
 

 

post #29 of 54

The cMoyBB will stick around.

 

Working with aluminum extrusion shops has taken 2 weeks longer than anticipated, as we've only found three manufacturers capable of producing the case. I expect to give the go-ahead for a pre-production batch this week.


 

Quote:
Originally Posted by BLACKENEDPLAGUE View Post

I'm really wanting one of those CmoyBBs but am kinda strapped for cash, will get one soon though. Hopefully those modded ones that JDS is selling on eBay won't all be gone by the beginning of July



 

Reply
post #30 of 54

i own the the cmoy bb and it is awesome with my westone 4's. i cant wait to get this new amp when it comes out and the new slim design to it i definitely like, cant wait.

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