single push volume pot, volume up/down via a button.

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Well, My first post here,I wanted some help from you guys,

you see I want to make a cmoy amp,

now I have sorted out all the parts and I am using small lithium packs in series-parallel mode coming to around +-6v for the opamp and have figured out everything else,

Now instead of using a volume pot. I wanted to use something that allows me to increase/decrease volume at a push of a switch or two..

Like you have on the television sets press + and volume increases and press - and it goes down..

Well I've tried on the web and all I ended up was with MAXIM chips, such as 5486 and similar types, I have problems sourcing MAXIM chips in my country, so I am looking for alternatives.. Other than that is there any other way this could be done ?
 
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