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A wide box in textured blue crackle finish, seen face on. Eleven clear skirted knobs with silver caps stand in three columns of four, four and three, with a small toggle at the foot of the middle column. Three toggles with dark round LED bezels run across the top, a fourth toggle sits below the right-hand one, GHOST is lettered in silver at the right, and two small jacks sit at the lower right.

Three circuit-bent boards in one box · Switchboard, Dragonfly VCO, Spirit Box · One of a kind

Ghost

Synth Available · 1 of 1

Three circuits in one blue 1590DD, and all three are circuit bent: my Switchboard, my Dragonfly VCO and a PedalPCB Spirit Box. Pick the Switchboard or the Dragonfly as the sound source and it runs into the Spirit Box. It looks like something left running in an abandoned radio station.

  • TypeNoise synthesizer and effect, three circuit-bent boards in one box
  • ControlsEleven knobs, five toggles and three blue LEDs on the face, with a line in and an output; the DC jack on the top edge
  • CircuitMy Switchboard and Dragonfly VCO, and a PedalPCB Spirit Box, all three circuit bent
  • Enclosure1590DD
  • Weight~1 lb 4 oz
  • Power9V DC, center-negative barrel jack on the top edge
  • BuiltOctober 2026
  • StatusAvailable - one of a kind
$2800 free shipping Buy with Card Email to Buy

What it does

Three circuits share this box. The Switchboard and the Dragonfly VCO are layouts I give away on this site, and they are the two sound sources: switch between them and whichever is on runs into the Spirit Box. The Spirit Box is a PedalPCB board, and a switch on it flips it from beepy echoes to an adorable 8-bit crunch. All three are circuit bent.

There is a line in too, so the Spirit Box also works as a standalone effect on whatever else you feed it.

Blue crackle finish, blue LEDs, clear skirted knobs with silver caps, and GHOST in silver on the lid.

About the price: a box this size is normally $280. This one is ten times that on purpose. It is the first synth I built after my dad died, so it is priced all stupid. You would have to be crazy to buy it. If you are exactly that crazy, it is yours. If not, it is perfectly happy haunting my bench.

Demo

Demo filmed by Onion Madder on the actual unit. Watch it on YouTube.

Controls

Eleven knobs and five toggles
Across three boards, and bent, so there is no tidy map. One toggle picks the sound source, and one flips the Spirit Box from beepy echoes to an adorable 8-bit crunch.
IN
The left jack on the face. A line in to the Spirit Box, so it also works as a standalone effect on anything else you plug in.
OUT
The right jack on the face.

Circuit: my own stripboard layouts, free on this site, plus a PedalPCB Spirit Box. Built, painted, and finished by Onion Madder as an original one-off - not affiliated with, endorsed by, or a clone of any commercial brand.