[Cjuried]

I am a fan of the LM4562NA, just watch out for counterfeits as they are everywhere. If needed I have, available, genuine and authentic LM4562NA ICs available here:
 
http://juriedengineering.com
 
Best,
 
Chris

 

[imran27]

I am thinking for using the LM4562 for my custom AMP, does the metal can version really sound that better? If not then the LM4562NA is cheaper than LM4562HA (₹232 vs ₹663). I just want a neutral, natural/flat and extended sound. It must have a good bass and treble extension and must sound very neutral and flat. A good airiness and soundstage is also what is very much desired. I hope LM4562NA can provide that type of sound.

 

[Cjuried]

From my experience and that of many others, electrically and sonically they are equivalent. So yes, they are effectively the same part. Simply a TO-99 package versus a PDIP package.
 
Sincerely,   
  
Chris Juried  
Audio Engineering Society (AES) Member  
InfoComm-Recognized AV Technologist
http://www.JuriedEngineering.com (Juried Engineering, LLC.)
http://www.TubeEquipment.com (Tube Equipment Corporation)
http://www.HistoryOfRecording.com (History of Recording)

 

[imran27]

  From my experience and that of many others, electrically and sonically they are equivalent. So yes, they are effectively the same part. Simply a TO-99 package versus a PDIP package.
 
Sincerely,   
  
Chris Juried  
Audio Engineering Society (AES) Member  
InfoComm-Recognized AV Technologist
http://www.JuriedEngineering.com (Juried Engineering, LLC.)
http://www.TubeEquipment.com (Tube Equipment Corporation)
http://www.HistoryOfRecording.com (History of Recording)

Thanks for the information.
 
Though in real applications I might want to consider TO-99 for it's better thermal dissipation which can easily drive AKG's and DT's. It is a bit costlier but may be worth if the output impedance is low enough to drive multi BA IEM's and drive is already high enough to drive AKG's and DT's at the least. If not I will have to add an LME49600 as the buffer.
 
I welcome all the suggestions, thank you.

 

[Lobarkaine]

I have done a comparative test of all tree opamps dip socket and I may confirm that they don't sound the same. If someone is interested this is the link:

https://www.head-fi.org/threads/dual-opams-audio-test-on-dap-and-usb-dac.966422/