A demonstration of an assembled Electric Western Phantastron vacuum tube synthesizer. 
This Phantastron was built for a customer from the same components & case parts in the standard kit. The Phantastron has a 30’s vacuum tube sound, like an Ondes Martenot in the highs and a Trautonium in the low range.
Phantastron was recorded direct to camera. [...]

Analogue Systems manufactures analog synthesizers, including the RS Integrator system of modular analog synthesizer components.
Their product line includes:

Complete modular systems
The Spawn patchable analog synthesizer
Control-Voltage keyboards, including one based on the classic ondes martenot.

This site charts the history of electronic music instruments from 1870 to 1990. It’s a fascinating site that covers the most important early instruments, including the Telharmonium, Electronic Telegraph, Theremin, Ondes Martenot, Moog and even the electronic sackbut.
The main focus is on instruments developed between 1900 and the 1960’s. This is one of the most [...]