Get these ;

http://cgi.ebay.com/IN-9-NIXIE-BARGRAPH-TUBE-PURPLE-VIOLET-12-TUBES_W0QQitemZ330110073323QQihZ014QQcategoryZ58174QQrdZ1QQcmdZViewItem

Nixies are always cooler than others.If you are out of time check out
equalizer designs.They'll work for you.
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