Well i dont know of any that you can buy because i had the same problem. I turned to a 9v batt. but before i did that i found that old wireless home phones to be a great start. The batt. pack on an older phone held 6 triple A batts. But if that is not an option then you could build one from...

You were right! Thanks for your help. But sadly i have a new problem with my cmoy. Everything is hooked up right because when i plug a cd player to the IN and headphones are pluged in to the OUT, sound goes through but when i add the 9volt there is no added volume/ base ect... The volume...

I just picked up a 10K pot from ratshack, there are six pins on the back and I have no idea what the pinout is. Can anyone help me?

I am going to be using them in a basic CMoy.

I have two op-amps at hand a BA4558 and a TLV2472AIP. I have no clue which one is the better pick? If anyone can help me out that would be most appreciated!

I dont know anything about these potentiometers but they look as if they will get the job done! I cannot find any information nor can I find pics to support what i have. What I can provide are the numbers on the pot: B50K and KWE I think is the company name. Also it has six outgoing pins...

The picture is not appearing. Can you repost?

Yes, definitely go with the Cmoy! There is so much documentation and although it might hit the wallet but not as much as other DIY portable amp projects.

Yes please do!

considering a portable amp design that will have a power supply of four 9 volt batteries, and considering the virtual ground divider would it be possible to use 2 1000µF 50V electrolytic capacitors if configured properly? Also... Will 470µF electrolytic capacitors handle bass better than...

Well i mean with additional opamps can i have multiple inputs and outputs? Is it possible to implament this so I can have two inputs for two CD players and to outputs for two headphones? If so, then it comes down to configuration with mabey a switch of some sort.

Why is it better to use carbon films opposed to the metal films?

Is it possible to incorperate 2 or more op-amp chips in a single project? If I wanted say eight channels of output and four channels of input would it be possible to use more than one op-amp chip? If so how many would I need?

Oh ok I see what you mean!

Thank you so much! I was in doubt but because all the DIY guides i have looked at said that RadioShack products are crap, but for me i hate to order online and I have a RadioShack within walking distance of my house. Why should i upgade soon?

This is my first build and I am going to start simple with the CMoy! I was just wondering if the TL082CP Wide Dual JFET Input Op Amp8-Pin DIP from RadioShack wold be ok to use. Well to me it looks ok to use, by which I mean it fits all the specs. Also the DIP-8 pin IC sockets I am going to be...

Nice work! But why not 2 9v's?