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Op Amps for Essence STX

post #1 of 7
Thread Starter 
Greets folks!

Recently read about Op Amps and how they can completely change the sound of your card. I am very interested in that. I saw that the LME49720NA Op Amp is notorious for brightening up dark sounding headphones (I would put 650's in that category).

Can anyone recommend some good Op Amps for 650's if I am am primarily listening to Electronica? I usually have to use the equalizer to up the treble and all, so that is something to consider.

What is the best way to get these Op Amps as well?

Where could I order the LME49720NA Op Amps reliably if they are the best way to go for the STX?

Thanks!
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post #2 of 7
I guess the best way to get them would be to order some samples from National Semiconductor themselves. If you have an .edu email account, you can get them for free. I'm probably going to do that soon again. I gave my last four LM49720NAs to my friend, who threw them on his Claro Halo to replace some 5532s.

The other places to get them would be electronics supply etailers like digikey.com. I tend to get a lot of stuff from Digikey if I can't get them for free.
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by RallyMaster View Post
I guess the best way to get them would be to order some samples from National Semiconductor themselves. If you have an .edu email account, you can get them for free. I'm probably going to do that soon again. I gave my last four LM49720NAs to my friend, who threw them on his Claro Halo to replace some 5532s.

The other places to get them would be electronics supply etailers like digikey.com. I tend to get a lot of stuff from Digikey if I can't get them for free.
Is it any slower to get them from National Semiconductor? I'd rather just pay if it's going to take weeks, it mentions "Lead Time: 6 weeks" so, just wondering if anyone knows what the wait is like at National?

Also, does this require soldering? I am getting mixed reports in my research :/
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post #4 of 7
No, it does not require soldering. Since it's a DIP8 configuration, you just pop the old opamp out and then stick the new one in. Make sure it's aligned as it was originally or you may run into the risk of blowing up the opamp or your card.
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post #5 of 7
I personally recommend getting a PLCC extraction tool like the ones Radio Shack carries. The OpAmps have very soft pins and once they are bent, it is very difficult to reshape them. The PLCC tool applies equal pressure when you remove them from your sound card.
post #6 of 7
Quote:
Originally Posted by chalkbluffgrown View Post
I personally recommend getting a PLCC extraction tool like the ones Radio Shack carries. The OpAmps have very soft pins and once they are bent, it is very difficult to reshape them. The PLCC tool applies equal pressure when you remove them from your sound card.
Or a pair of tweezers lols. Does the same job. Just shake it out and hold the 'ends' of the tweezers along the shorter sides.
post #7 of 7
Thread Starter 
Ended up ordering 3x through Newark..total cost was like $8.50 since my .edu e-mail addresses aren't working anymore

Hoping it ends up brightening up my HD 650's so I can stop using the equalizer
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