The Music From The Ether chassis set consists of two chassis. The power supply/amplifer chassis pictured at the top and the oscillator chassis pictured at the bottom. This chassis set is perfect for those of you who wish to "roll your own" theremin. Our chassis sets are based on the original drawings of the Mark Keppinger MK1 tube theremin. Fabricated of 18 gauge steel, prepunched for all components and deburred. They are painted in the traditional flat brown that RCA used to slather on all of their electronic chassis "back in the day" but you can have them in any color Krylon or Rustoleum makes upon special request at no additional cost. Please note, it may be neccessary to redrill some mounting holes depending upon your individual components.