swapping opamps in an Aphex 651

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changeng

Active member
Joined
Jan 27, 2010
Messages
35
Help!

I opened up my Aphex 651 and noticed that the opamps are all socketed.

OOOoooOOO! Time for hi-voltage danger.

It's hard to see what's in there now from the tiny print, but it looks like I have

7 pieces of "M9118 LF 353N "

and 8 pieces of "NE5532N FK87668 9135VH"

What would be good updated replacements? Typing these into Mouser isn't helping too much. This unit was made in '91, so I imagine that there are faster, more efficient opamps I can toss in. The unit as it stands is good, tho it does have a bit of hiss when I crank the input pot.

PLEASE! Suggestions for opamp upgrades? And will i notice much of a difference?

Many thanks,

Stuart
 

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