Acxel Resynthesizer and Rhodes Chroma

From Kevin Kelly of The Audio Playground Synthesizer Museum, via matrixsynth:

The Technos Acxel is an interesting synthesizer, based on manipulation of spectra in the frequency domain. This is something several of us have been doing in software for quite a while.

In addition to the Acxel and the Rhodes Chroma, I see an E-MU EMAX in the background.