that guitar IS transparant! should be very heavy to play as it is made totally of glass. though may be it won't sound as good. :think:
thats an electric acoustic guitar. so the switches are to change btw the two pick-ups. and the 'black board like thing' contains the volume and the tone knobs.
the sound depends mostly more upon the thing it is made of, ie the wood (or glass in this case). of course, pick-ups, amps, the cables in btw them, the acoustics of the room,the strings, the PLAYER also affect the tone.