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Old 30th March 2012, 07:50 PM   #1
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Question TL072 opamp replacement

I have a Crate VC508 guitar amplifier that many recommend modding by replacing the TL072CP opamp chip. I got a TI NE5532 off ebay. It's supposed to be a stright up replacement but it's about a third of the size. The TL072 is around a half inch rectangle with 8 legs going into a socket. The NE5532 also has 8 legs but is less than half the size. I need a low noise drop-in replacement for the TL072CP (I broke one of the legs removing the original). Any suggestions?
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Old 30th March 2012, 08:28 PM   #2
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You've got the right part, but just need the correct package. TI NE5532P is the version you need.

NE5532P Texas Instruments Op Amps

- Richard
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Old 30th March 2012, 08:38 PM   #3
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TL082 is a more noisier replacement, and is fully voltages and pinīs compatible, but TL072is a very common IC, you can buy it elsewhere. Also, a poorest replacement in an emergency case are bipolar Mc/LM1458, or LM358. Also a TS912, or TLC272. The last CMOS 12V max supply.
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Old 30th March 2012, 09:07 PM   #4
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what is the best/cleanest replacement?
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Old 30th March 2012, 09:49 PM   #5
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The one usually put forward as best is the opa2134
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Old 30th March 2012, 09:57 PM   #6
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OPA2134PA is the direct replacement, being a j-fet OpAmp as TL072.
You need to pay attention to the last letters, they represent the PDIP package.
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Old 30th March 2012, 10:13 PM   #7
sreten is offline sreten  United Kingdom
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Hi,

NE5532P worked just fine and dandy replacing the TL072P on my bass
amplifiers input. Far lower input noise and it sorted out some other
issues. There is no need to look elsewhere if it works, very little point.

rgds, sreten.

The "best" is usually the most expensive, and not applicable to guitar amps.
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Old 30th March 2012, 11:25 PM   #8
pdul is offline pdul  Denmark
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When it comes to NE5532, the NXP/PHILIPS version deserves a try too. In my experience it sometimes sounds very different/better than the TI
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Old 31st March 2012, 02:43 PM   #9
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Thanks for the help guys. I'm definitely a newbie.
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Old 31st March 2012, 03:09 PM   #10
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Quote:
Originally Posted by jabba217 View Post
what is the best/cleanest replacement?
It depends ...

AD8620
OPA1612
OPA2827
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