This instrument is made up of two lightly modded <a href="http://casperelectronics.com/finished-pieces/benjolin/">Benjolins</a>.
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I've found that Benjolins play really well together and two units is a whole lot better and crazier than one.  
<a href="http://casperelectronics.com/wp-content/uploads/Benjolin/DoubleBenjolin/benjolin-light-bender.jpg"><img src="http://casperelectronics.com/wp-content/uploads/Benjolin/DoubleBenjolin/benjolin-light-bender-300x174.jpg" alt="" title="benjolin-light-bender" width="450" height="300" class="alignnone size-medium wp-image-620" /></a>
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ADDED FEATURES:
-Oscillator fine tune adjustments.
-Oscillator rate indication LEDs.
-Jacks for all of the outputs and adjustable inputs for the VCOs and VCF. 
-A Rungle clock input jack which you can read about <a href="http://casperelectronics.com/rungle-mods/">here</a>.
-A four channel mixer for mixing the two Benjolin signals as well as two other signals (like the XORs or straight VCO signals).
-Switching bi-polar power supply. 
-Banana to 1/4".
