Boss GE-7 IC Chip Upgrade

[12StringStratMaker]

I modified my Boss GE-7 Equalizer long ago before people started recommending to change the IC's.
I found some Texas Instruments TL072 chips at a local store but they say TL072ACP on them.  Is the ACP of concern? Or can I still use them without problem for this mod?
Here's the link for the Texas Instrument TL072 product line: http://focus.ti.com/docs/prod/folders/print/tl072.html
Thanks very much.

[petemoore]

http://www.nteinc.com/specs/800to899/NTE858M.html

[12StringStratMaker]

Huh?

[The Tone God]

ACP should be fine. I belive the "C" means commercial tempature range, the "P" means plastic package, and the "A" stands for...um...

Andrew

[12StringStratMaker]

Thanks Tone God.

I won't be near my soldering iron until Monday but I look forward to trying it. 
I bought IC sockets too so that I don't mess the chips up.

[12StringStratMaker]

Reading the product spec sheet, found in that link I first posted.  It appears that the A is in reference to the max voltage.
No letter means it can take up to 10mV.
With A means it can only take up to 6mV.
With B means it can only take up to 3mV.

I assume the A chip won't be a problem then.
Looking at the specs of another chip that can be used in this mod, TI 4559P, that's only 6mV max too so it's all good.

[runmikeyrun]

what's the mod supposed to accomplish?  More boost?

EDIT: never mind, used the search feature...

[petemoore]

  Supposed to lower the noise floor, From what I've read. There's not much you can do to a nice EQ w/15db boost except make it quieter...It'll be interesting to see how much noise-drop can be wrought out with chip swaps...

[12StringStratMaker]

I'll let you know how much of a noise difference it makes.
I just picked up, out of curiousity, a GE-7 with the Tone Jam sniper modification and I already have a GE-7 with an old version of indyguitarist's mods.  It was by fluke that I actually found the TL072 chips, so now I have something to compare to.

[12StringStratMaker]

Installed the chips today.
Man does that make a difference in the background noise.  Like I mentioned, I have the sniper mod to compare to, which is a very similar mod.  The GE-7 before the chips had a noticable hiss when you turn it on (without any guitar sound coming through), but now it has the same noise as the GE-7, which is about 30-40% of what it previously had.
Well worth it for the higher quality pedal.  The chip sockets are fanastic and made it so easy.
Thanks for letting me know I wasn't messing up my pedal.