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Whammy Custom PCB + Dual Mono PSU + Muses 72320 Vol Control

Another day, another finding,

for sale is a set of custom PCBs for Wayne Colburn's Whammy, just a different approach (and a bit better sounding as I listened to about 3 versions of it). Designer of the set is a very professional DIYAudio member who puts a lot of passion into his routings and PCB making. The special thing is, you can put the Amplifier backpack on the PSU with appropriate Spacers and thus fit it into a 3U Galaxy Case from ModuShop (230x280), by using L-shaped aluminum heatspreads you can dissipate the output transistor heat directly to case without the need of a dedicated heatsink. The other thing making it special is the PSU (or UPS how the designer called it). It's a dual mono cap multiplier with HF and LF filters, thus very silent ;-). The amp board is nearly fully stuffed, only 4 resistors and a few caps missing. Stuffed with original BB OPA604. The muses vol. Control can be directly supplied by the PSU and does not need any special PSU

Consists of:
  • Whammy Board nearly fully assembled
  • A set of nicely matched 2SK2013 / 2SJ313 Output Transistors
  • Dual Mono PSU cap mulitplier PSU
  • Muses 72320 Vol. Attenuator

I paid a total of around 230€ for everything,
asking 200€ + shipping + PP fees.


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A built variant on bench for testing before it went into the enclosure (I know its dark pictures, just you get an image of how its backpacked).


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