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REVIEW: Audiotailor “Jade” Vacuum Tube Headphone Amplifier
Mar 27, 2009 at 3:35 PM Post #136 of 977
Jade new PCB with improved quality.

90A8FFBAE164EFA29D2DC19C8FDDFE38.jpg


FEF541ED1B3ADC66B6EAB8F6F7EC13BA.jpg
 
Apr 1, 2009 at 9:50 AM Post #137 of 977
Quote:

Originally Posted by audiotailor /img/forum/go_quote.gif
Jade new PCB with improved quality.

90A8FFBAE164EFA29D2DC19C8FDDFE38.jpg


FEF541ED1B3ADC66B6EAB8F6F7EC13BA.jpg




Is mine are this one??
k701smile.gif


I got it finally this afternoon, i just opened the box and installed the tubes, will post the first impression soon

PS. may i know what is the use of the "H/L" switch on front panel?? is it high/low gain?? as it didn't mention on manual.
 
Apr 1, 2009 at 11:00 AM Post #138 of 977
Quote:

Originally Posted by oldwine /img/forum/go_quote.gif
PS. may i know what is the use of the "H/L" switch on front panel?? is it high/low gain?? as it didn't mention on manual.


? Mine doesn't have that... How can we reasonably compare opinions if they keep changing the design all the time?!
 
Apr 1, 2009 at 11:24 AM Post #140 of 977
Quote:

Originally Posted by PaulyT /img/forum/go_quote.gif
? Mine doesn't have that... How can we reasonably compare opinions if they keep changing the design all the time?!


I think they are still have some tweaks on it. What i feel we are like the rats in lab...
tongue.gif
 
Apr 2, 2009 at 2:56 AM Post #141 of 977
Quote:

Originally Posted by oldwine /img/forum/go_quote.gif
Is mine are this one??
k701smile.gif


I got it finally this afternoon, i just opened the box and installed the tubes, will post the first impression soon

PS. may i know what is the use of the "H/L" switch on front panel?? is it high/low gain?? as it didn't mention on manual.



Yes ! You got this new version of PCB. H/L switch is high low gain.
 
Apr 2, 2009 at 3:00 AM Post #142 of 977
Quote:

Originally Posted by oldwine /img/forum/go_quote.gif
I think they are still have some tweaks on it. What i feel we are like the rats in lab...
tongue.gif



Basic design & sound signature is no change but some option can be choice by customer.

Audiotailor promissed that - Tailor made what you want.
 
Apr 2, 2009 at 3:37 AM Post #143 of 977
is the H/L switch part of the new PCB? wondering how the this H/L switch would do to the jade for denon d2/5/7000
 
Apr 2, 2009 at 4:12 AM Post #144 of 977
Quote:

Originally Posted by j2kei /img/forum/go_quote.gif
is the H/L switch part of the new PCB? wondering how the this H/L switch would do to the jade for denon d2/5/7000


Due to high impedance cans need more gain but low impedance cans need less. So add a feedback control switch on it. Jade can drive low impedance Cans verywell. So I think Denon cans is no problem. I only tested on Grado SR325 , ATH-900TI, AKG-501 & K701, 240DF , Beryer DT880 , SEH HD600/650.
 
Apr 2, 2009 at 7:04 AM Post #145 of 977
could you please provide more info about the feedback control switch? i hope it doesnt cost a lot
 
Apr 2, 2009 at 8:04 AM Post #146 of 977
Quote:

Originally Posted by audiotailor /img/forum/go_quote.gif
Yes ! You got this new version of PCB. H/L switch is high low gain.


So, what is the factory recommendation for using H/L for particular phone?? For example, how setting should be used on Beyer DT880 (600 ohm), SA5000 and AKG K501??

Thanks a lot.

I just burnin the amp less than a day, so not much impression about it. i will let everyone know about the performance for it.
 
Apr 2, 2009 at 9:49 AM Post #147 of 977
Quote:

Originally Posted by oldwine /img/forum/go_quote.gif
So, what is the factory recommendation for using H/L for particular phone?? For example, how setting should be used on Beyer DT880 (600 ohm), SA5000 and AKG K501??

Thanks a lot.

I just burnin the amp less than a day, so not much impression about it. i will let everyone know about the performance for it.


DT880 & K501 use high is better due to it need more gain. Jade need to burn in at least 100 Hours to have it best performance.
 
Apr 2, 2009 at 3:48 PM Post #148 of 977
Quote:

Originally Posted by j2kei /img/forum/go_quote.gif
could you please provide more info about the feedback control switch? i hope it doesnt cost a lot


yup, and may we know when do the PCB and the design "finalized"??

BTW, can you also clarify which headphone jack is plate outupt and cathode output.
 
Apr 3, 2009 at 2:39 AM Post #150 of 977
Quote:

Originally Posted by oldwine /img/forum/go_quote.gif
yup, and may we know when do the PCB and the design "finalized"??

BTW, can you also clarify which headphone jack is plate outupt and cathode output.


Your amp PCB is finalized design. Left side jack is cathode output , Right side is plate output.

IEC AC input will be include soon.
 
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