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Experience with AMR DP-777

Hi there, I'm fairly new to audiogon, but have been assembling high-end systems for about 15 years now. Recently bought an AMR DP-777 and swapped tubes and it killed my left channel the first time. I'm no stranger to swapping tubes (in DAC's and Preamps), so I was surprised this happened. I've read some other threads that this sort of stuff has been an issue with this DAC. Of course the DAC sounds, but I have two questions/points:

1) for those of you that have experience rolling tubes with this DAC, what is your procedure to make sure it does cause some any system failure with the unit?

2) second thing is I've sent the unit in for the SE upgrade and will be able to report back to you guys the difference/improvement in sound, as I know it's sonic signature very well
jsch123
georgehifi's avatar
georgehifi
10,312 posts
 

My short view of the difference after we (Ason audio Club) did a direct comparision of the DP-777 old v new se both with latest quad board on a high rez system here if want to read about it. We only did RedBook.

http://www.diyhifi.org/forums/viewtopic.php?f=2&t=2914&sid=a3b7dbdf8e9110be0bbff630040a6882

Cheers George
audiogalore
70 posts
 
I have a DP-777SE and been experiencing no sound whenever it is ran for a period of time. In order to reset sound I need to power down and let it sit for an hour or so after power on is set sound is restored! Have anybody experience such an issue? 
georgehifi's avatar
georgehifi
10,312 posts
 

Ask Kuei Yang Wang in the link I posted above, he is Thorsten Losche the designer of the AMR products.


Cheers George 


audiogalore
70 posts
 
Hi George:

Thank you for the info 

Best Harold
maxboy00's avatar
maxboy00
276 posts
 
FWIW, I ordered this DAC back in March, the dealer said that the shipment was being delayed due to an issue with the volume control. The issue had be identified to a faulty chip and AMR was in the process of resolving this issue. As a result my dealer said the delay would be another three weeks minimum. I decided to cancell my order and went with another DAC. I did demo the AMR, non SE version, and found it to be exceptional on RB playback. There are some posts over on CA forum on this topic.


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