The maker of the Phantastron All Vacuum Tube Synthesizer spared no expense in producing his demonstration video of this versatile musical instrument. The kit is $195 in the Makers Market / Boing Boing Bazaar.
Adapted from a WWII radar circuit bearing the same name, the Phantastron is an all vacuum tube synthesizer. It can be used as a full featured oscillator, an effect for guitar synth and other instruments, or as a standalone instrument.
The Phantastron includes:
Control Voltage (CV) input
Audio Input
Line level output
Volume, Octave, Pitch and Waveform controlsThe kit is built in vintage style upon a turret board, rather than a PCB. It is enclosed in a handsome fire-branded unfinished wooden case with aircraft aluminum panels.
More information and a sample of the manual can be found here.