TL072 Sub ?

[Lonestarjohnny]

are there any other Dual Jfet's that will sub for the TL072 ?
Also does anybody know if a 478 opamp is the same as a 4558,
I can't get the spec sheet on it translated well enough to read what its saying ?
Thank's,
JD

[Hal]

the 4558 can sub a 072 :-D

obviously, TL062 and TL082 would work.  Also, u could use 1 singles (071) or half a quad....

pretty much any dual op-amp should work, with different results.  Why not use tl072, they're pretty easy to get your hands on...

www.ti.com
get samples :-D

[Lonestarjohnny]

Thank's Hal, I'll do that, do you know anything about the one's marked 478 ? they are in the same circuit on this old Peavey Mace, 150 watt amp I'm restoreing, it has those piece's missing from the board so I'm going by a schematic I googled off the webb.
JD