Please print your requests clearly and to the point. The Sample Modulator we sent you may not work well on 9 Volt. If the sound is less than perfect, or the sound fades when your hand is near the box, it does not mean the Sample Modulator is defective. The Operating Instructions are printed on the back of the Modulator brochure. Not all CD Players are alike.
Some newer Players have slightly different earphone plugs.
The plug on the Sample Modulator we sent you may not give a good contact and you will NOT hear the sound of the CD Player on your Radio. If your Sample does not work, with your CD Player, there is another way of testing the Sample Modulator. Turn on any FM Radio. Turn on the FM Modulator. Turn the tuning knob on the Sample Modulator left and right.