what ICs can be used in place of MC33172P

[beedoola]

thank you.

[armdnrdy]

For which circuit?

Post a link to a schematic.

[Govmnt_Lacky]

Doesn't the MXR Zak Wylde OD use that chip?

In answer to your question.... Try any dual op amp you wish until you find one that suits your taste 

[PRR]

LM358 is the same idea from different source. Check pin-out. Also note that '33172 can take 44V, '358 only 36V.

[beedoola]

For which circuit?

Post a link to a schematic.

Death By Audio Echo Dream 2.

I traced it. Works (breadboarded) but I'm not sure if it works 100% I used a LM1458 and TL072 but they don't work the same.

Is there no way to add files/attachments?

[armdnrdy]

Is there no way to add files/attachments?

You can upload pictures in the gallery such as your photo builds/schematics/pictures of your pedals etc... Simply go to:

http://aronnelson.com/gallery/v/Schematics-etc/

login as user: diyuser
pass: j201

Once you are logged in, choose add item from the left sidebar.

Once uploaded, simply click on the photo and copy the URL and paste it into your message.

[beedoola]

http://i157.photobucket.com/albums/t54/Beedoola/EchoDream2revised2_schem_zps577d3449.png

[armdnrdy]

As PRR stated you can use a LM358 or just about any garden variety low power dual op amp in this circuit. TL022 would be a good choice as well.

I noticed something that looks a little odd that you might want to verify: downstream from the 7805, in the power filter section, there is a 100 nano cap in series with a 100µf cap that goes to ground.

It seems as if the 100 nano should be parallel to the 100µf.

[beedoola]

As PRR stated you can use a LM358 or just about any garden variety low power dual op amp in this circuit. TL022 would be a good choice as well.

I noticed something that looks a little odd that you might want to verify: downstream from the 7805, in the power filter section, there is a 100 nano cap in series with a 100µf cap that goes to ground.

It seems as if the 100 nano should be parallel to the 100µf.

thanks. I went over the board a few times but I'll check again. The routing is a little odd on the PCB/ and I'm a noob at tracing 

[Plexi]

I'm thinking in build the Echo Dream 2, too.
Any update?

[11-90-an]

Welcome AmycCrary....

What has your post got to do with MC33172P...?