The K6 power module produces a very hot output, almost line level in some situations. When the microphone is recording in a fairly loud SPL environment, the resulting audio signal from the K6 is too large for the camcorder's internal mic pre-amp. The solution for this is to use the K6-RD power module. This version of the K6 has a reduced output level that will accommodate more sensitive mic pre-amps on some camcorders as well as other electronic equipment. You can purchase the K6-RD as is or, you can have your K6 easily converted to a K6-RD. The conversion will be performed at no charge if, the K6 is within it's warranty period. Otherwise, the charge is $17.50+shipping for the conversion.