[derbigpr]

Try Muses op-amps. Honestly outclasses all the others. Totally neutral sound, but very dynamic, vivid, big, natural, etc. Asus E1 going from "meh" to "amazeballs" with just the change to Muses O1 opamps.

 

[afshin]

yes muses is great ... very dynamic and analoge soundstag ... muses 01 and muses 8920 is a jfet . I think for after dac input impedance very important and I recommend bypass rail power PSU for near chip with film capacitor without ceramic cap ... mundorf silveroil is very good . don't forget break in time for 300 hurs ... mundorf much help for more dynamics ... I think the value of 1µf or 0.47µf is enough and does not need to be smaller.

 

[DaaDaa]

My DAC uses 4x OPA1612A in the output stage as you see in this picture. would anyone have any experience upgrading these?
 

 

[afshin]

my option  first stage(I/V stage)  2 chip opa2604 or muses8920  and 2 chip for outpot stage lme49860...
 
thanks afshin

 

[DaaDaa]

would this be advisbale to buy?
http://www.ebay.com/itm/4x-LME49860NA-Dual-Low-Noise-Audio-OpAmp-AUTHENTIC-LME49860N-LME49860-DIP-8-USA-/150724186632?hash=item2317dc9208:g:MAYAAOxycSdR0O-k\
 
 
چاکر افشین خان. خوبی حاجی؟

 

[DaaDaa]

I have Burson's new integrated V5i on order and LME49860 on order to try in place of OPA1612. 
 
I bought 4x LME49860 for 15 bucks
and 4x Burson V5i for 140 bucks. 
 
i have no idea what to expect im just gonna try them and see what i hear. 

 

[afshin]

Hi
 
Excellent Just do not forget burn-in time for 200 hours ... lme 49860 Amazing sound after 200 hours ...
I've never heard Burson's voice. Due to the use of film capacitors you have a good voice.
Please share your opinion about  burson opamp .
 
thanks . afshin
 
قربان شما ممنون ... شما ؟

 

[DaaDaa]

  Hi
 
Excellent Just do not forget burn-in time for 200 hours ... lme 49860 Amazing sound after 200 hours ...
I've never heard Burson's voice. Due to the use of film capacitors you have a good voice.
Please share your opinion about  burson opamp .
 
thanks . afshin
 
قربان شما ممنون ... شما ؟

 

 

 

 
 
Something really awesome happened.
so I ordered 4 of these @ $15 (LME 49860 ):
http://www.ebay.com/itm/150724186632?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
and 4 of these @ $150 (Burson V5i):
http://www.bursonaudio.com/products/supreme-sound-opamp-v5i/
to replace the OPA1612 in this DAC.
well the Burson is gonna take 10 days to get here but the TI chips just arrived 25 miutes ago and I installed them right away with the interntion to leave them playing for a good 100 hours before critical listening. Awesome thing is from the first note it is sounding so much better. not just in microdynamics but just the noise floor and distortion. sound is so much cleaner. it was so muffled before. it's quite an experience. i dint know why in the hell they would use them in the first place. this is crazy. anyway now i can actually say i love this component. mind you i have not heard the Gustard. chances are its as good or even better. honestly this DAC is more expensive just because of its ridiculously overbuilt Chassis and just how heavy it is.  that's what I suspect. anyway the sound is top notch now. from DA003 direct to my single ended triode KT88 integrated @ 15 watts. 
 
 
 
ما چاکر آقا هستیم. غلام ادبت حاجی :دی