Casper Electronics

This is just a simple four channel mixer. The case has wooden sides, an MDF base plate and a wrap around aluminum face plate. The picture on it was cut from an old health textbook. It’s a student taking a hearing test. Great headphones. There are three types of input jacks for each track.

• stereo 1/8″ jacks for plugging in walkmans, cd players, computers, etc. (uses two channels)
• RCA jacks for connecting old home stereo equipment
• 1/4″ jacks for guitar, mic, synth, etc.

Here’s the schematic I used….